What is the Elimination Method?
A technique used to solve systems of linear equations by eliminating one variable at a time.
What is the operation of vector addition?
Vector addition involves combining two vectors to produce a third vector.
1/246
p.3
Elimination Method and Matrix Form

What is the Elimination Method?

A technique used to solve systems of linear equations by eliminating one variable at a time.

p.15
Vectors in Euclidean Spaces

What is the operation of vector addition?

Vector addition involves combining two vectors to produce a third vector.

p.45
Linear Independence and Bases

What does it mean for the set ଵ ଶ ଷ to be linearly independent?

A set of vectors is linearly independent if no vector in the set can be expressed as a linear combination of the others.

p.96
Diagonalization and Eigenvalues

What is the process of Diagonalizing a matrix?

Diagonalizing a matrix involves transforming it into a diagonal form, which simplifies many matrix operations and computations.

p.78
Diagonalization and Eigenvalues

What are diagonal matrices?

Diagonal matrices are square matrices in which all the entries outside the main diagonal are zero.

p.89
Diagonalization and Eigenvalues

What does it mean when a variable is free in the context of eigenvalue problems?

A free variable in eigenvalue problems indicates that it can take any value, leading to infinitely many solutions for the corresponding eigenvector.

p.75
Linear Transformations

What is the matrix representation of a linear transformation with respect to the bases?

The matrix representation of a linear transformation is a matrix that describes how the transformation acts on vectors in the vector space, relative to specified bases.

p.23
Linear Combinations and Span

What is the Span?

The Span of a set of vectors is the set of all possible linear combinations of those vectors.

p.73
Linear Transformations

What are Linear Transformations?

Linear transformations are just matrices in fancy wrapping.

p.70
Linear Transformations

How does linearity determine the shape of a transformation?

Linearity ensures that the transformation maintains the structure of the vector space, meaning that the output is a linear combination of the inputs.

p.27
Elimination Method and Matrix Form

What is a matrix equation?

A matrix equation is an equation in which matrices are used to represent a system of linear equations, typically in the form Ax = b.

p.37
Vector Spaces and Subspaces

What are the three properties to check if a subset is a subspace?

The three properties are: 1) the zero vector is in the subset, 2) the subset is closed under vector addition, and 3) the subset is closed under scalar multiplication.

p.43
Linear Independence and Bases

What does it mean for a set of vectors to be linearly dependent?

A set of vectors is linearly dependent if at least one vector can be expressed as a linear combination of the others.

p.53
Linear Independence and Bases

What is a basis for a vector space?

A basis for a vector space is a set of vectors that is linearly independent and spans the vector space.

p.23
Linear Combinations and Span

What does it mean for a vector to be in the Span?

A vector is in the Span if and only if the equation formed by the vectors has a solution.

p.73
Linear Independence and Bases

What is a basis in the context of linear transformations?

A basis for a vector space is a set of vectors that are linearly independent and span the space.

p.72
Linear Transformations

What does it mean for a linear transformation to be completely determined?

It means that the transformation can be uniquely defined by the images of the basis vectors.

p.45
Linear Independence and Bases

What is the vector equation involving the set ଵ ଶ ଷ?

The vector equation is used to determine if the set of vectors can be expressed as a linear combination of each other.

p.52
Linear Independence and Bases

What does it mean for vectors to be linearly independent?

Vectors are linearly independent if no vector in the set can be expressed as a linear combination of the others.

p.87
Diagonalization and Eigenvalues

What are the eigenvalues of a triangular matrix?

The diagonal entries of a triangular matrix are the eigenvalues.

p.71
Linear Transformations

What does it mean to prove a property of a linear transformation?

To prove a property of a linear transformation means to demonstrate that the transformation satisfies certain conditions or equations for all vectors in the vector space.

p.90
Systems of Linear Equations

Free Variable

A variable in a system of equations that can take on any value, leading to multiple solutions.

p.52
Linear Combinations and Span

What is the linear span of a set of vectors?

The linear span of a set of vectors is the set of all possible linear combinations of those vectors.

p.38
Vector Spaces and Subspaces

What is a subspace of a vector space?

A subspace of a vector space is a subset that is itself a vector space under the same operations of addition and scalar multiplication defined on the larger vector space.

p.93
Diagonalization and Eigenvalues

When is a square matrix diagonalizable?

A square matrix is diagonalizable if and only if there are linearly independent eigenvectors. Additionally, if a matrix has distinct eigenvalues, it must be diagonalizable.

p.18
Linear Combinations and Span

What is the subset of vectors spanned by a set of vectors?

The subset of all linear combinations of a set of vectors is called the span of those vectors.

p.64
Systems of Linear Equations

Simultaneous Equations

A method to solve two or more equations at the same time to find the values of the variables that satisfy all equations.

p.48
Linear Independence and Bases

What does it mean for vectors to be linearly independent?

Vectors are linearly independent if no vector in the set can be expressed as a scalar multiple of another vector in the set.

p.25
Linear Combinations and Span

What is the line through the origin that contains a non-zero vector?

The line through the origin that contains a non-zero vector is defined as the set of all scalar multiples of that vector.

p.63
Coordinate Systems and Change of Basis

What is a change-of-coordinates matrix?

A change-of-coordinates matrix is a matrix that transforms the coordinates of a vector from one basis to another in a vector space.

p.24
Systems of Linear Equations

What does it mean for a system to be consistent?

A system is consistent if it has at least one solution.

p.18
Linear Combinations and Span

What is a Linear Combination?

A linear combination of vectors is defined by a combination of given vectors and scalars, resulting in a new vector.

p.70
Linear Transformations

What is a linear transformation?

A linear transformation is a function between two vector spaces that preserves the operations of vector addition and scalar multiplication.

p.12
Systems of Linear Equations

What does the solution set represent in a system of linear equations?

The solution set represents all possible solutions that satisfy the system of linear equations.

p.20
Linear Combinations and Span

What does it mean for a vector equation to have a solution?

It means that there exist values for the unknowns that satisfy the equation, indicating that the vector can be expressed as a linear combination of other vectors.

p.51
Vector Spaces and Subspaces

What is the DIMENSION of a vector space?

The dimension of a vector space is defined to be the number of vectors in any basis for that vector space.

p.58
Vector Spaces and Subspaces

What is the standard basis for R^n?

The standard basis for R^n consists of vectors that have a 1 in one coordinate and 0 in all others, serving as the building blocks for the space.

p.96
Diagonalization and Eigenvalues

What is the significance of computing the matrix in the example?

Computing the matrix in the example demonstrates the practical application of diagonalization in simplifying matrix operations.

p.40
Linear Independence and Bases

What is a Basis?

A basis is a set of vectors in a vector space that is linearly independent and spans the entire space.

p.98
Coordinate Systems and Change of Basis

What is a change-of-coordinates matrix?

A change-of-coordinates matrix is a matrix that transforms vectors from one basis to another basis in a vector space.

p.22
Linear Combinations and Span

What is a vector equation?

A vector equation is an equation that expresses a relationship between vectors, typically involving a linear combination of vectors set equal to another vector.

p.41
Linear Independence and Bases

What is Linear Independence?

A collection of vectors in a vector space is said to be linearly independent if the vector equation has ONLY the trivial solution.

p.12
Systems of Linear Equations

What is an augmented matrix?

An augmented matrix is a matrix that represents a system of linear equations, including the coefficients of the variables and the constants from the equations.

p.72
Linear Transformations

What is the Theorem regarding linear transformations and bases?

Given a linear transformation and a basis for a vector space, if certain elements are fixed, then the transformation is completely determined.

p.27
Systems of Linear Equations

What is a coefficient matrix?

A coefficient matrix is a matrix that contains the coefficients of the variables in a system of linear equations.

p.5
Elimination Method and Matrix Form

What is the purpose of the elimination method?

The elimination method is used to solve systems of linear equations by eliminating variables to simplify the equations into a form that can be easily solved.

p.68
Linear Transformations

What is a function that is NOT linear?

A function that does not satisfy the properties of linearity, specifically failing to meet Property 1 in the definition of linear functions.

p.74
Linear Independence and Bases

What is a basis for a vector space?

A basis for a vector space is a set of vectors that are linearly independent and span the entire space.

p.68
Linear Transformations

What is Property 1 in the definition of linear functions?

Property 1 states that for a function to be linear, it must satisfy the condition f(x + y) = f(x) + f(y) for all vectors x and y.

p.62
Coordinate Systems and Change of Basis

What is the change-of-coordinates matrix?

The change-of-coordinates matrix is a matrix that transforms coordinates of vectors from one basis to another in a vector space.

p.34
Vector Spaces and Subspaces

What is a vector space?

A vector space is a set of elements (such as vectors) that can be added together and multiplied by scalars, satisfying certain axioms.

p.84
Diagonalization and Eigenvalues

What is the characteristic polynomial?

The characteristic polynomial is a polynomial which is derived from the determinant of a matrix subtracted by a scalar multiple of the identity matrix, used to find eigenvalues.

p.47
Linear Independence and Bases

What is a Basis in a vector space?

A collection of vectors in a vector space is a basis if it is a linearly independent set and the vectors span the space.

p.74
Coordinate Systems and Change of Basis

What is a coordinate vector?

A coordinate vector is a representation of a vector in terms of the basis vectors of a vector space.

p.56
Linear Combinations and Span

What are the -coordinates of a vector?

The -coordinates of a vector are the scalars that express the vector as a linear combination of the basis vectors.

p.69
Linear Transformations

What is a linear transformation?

A linear transformation is a function between two vector spaces that preserves the operations of vector addition and scalar multiplication.

p.22
Elimination Method and Matrix Form

What is an augmented matrix?

An augmented matrix is a matrix that includes the coefficients of a linear system along with the constants from the equations, used to solve the system.

p.94
Diagonalization and Eigenvalues

What does it mean to Diagonalize a matrix?

Diagonalizing a matrix involves finding a diagonal matrix that is similar to the original matrix, which means there exists an invertible matrix such that the original matrix can be expressed as the product of the invertible matrix, the diagonal matrix, and the inverse of the invertible matrix.

p.52
Linear Independence and Bases

What is the dimension of the subspace of where 1, 2, 3, 4, 5 are considered?

The dimension of the subspace is determined by the number of linearly independent vectors in the set, which in this case is 3.

p.14
Vectors in Euclidean Spaces

What is a VECTOR?

A vector is a mathematical object that has both a magnitude and a direction, often represented as an ordered pair or triplet of numbers in a coordinate system.

p.10
Systems of Linear Equations

What does it mean for a linear system to be inconsistent?

A linear system is inconsistent if there are no solutions that satisfy all equations in the system.

p.20
Linear Combinations and Span

What is a linear combination?

A linear combination is an expression constructed from a set of terms by multiplying each term by a constant and adding the results.

p.21
Systems of Linear Equations

What does it mean for a solution to be in a linear system?

A solution to a linear system is a set of values for the variables that satisfies all equations in the system.

p.44
Linear Independence and Bases

What does it mean if one vector is a scalar multiple of another?

It indicates that the two vectors are linearly dependent, meaning they do not span a space larger than one dimension.

p.86
Diagonalization and Eigenvalues

What is an eigenvalue?

An eigenvalue is a scalar associated with a linear transformation represented by a matrix, indicating how much a corresponding eigenvector is stretched or compressed during the transformation.

p.8
Echelon and Reduced Echelon Forms

What are matrices in echelon form?

Matrices that have a staircase-like structure where each leading entry of a row is to the right of the leading entry of the previous row.

p.11
Echelon and Reduced Echelon Forms

What is a reduced echelon form?

A matrix is in reduced echelon form if it satisfies the following conditions: each leading entry is 1, each leading 1 is the only non-zero entry in its column, and the leading 1s move to the right as you move down the rows.

p.81
Linear Independence and Bases

What is a non-trivial solution?

A non-trivial solution is a solution to an equation that is not the zero solution, meaning at least one variable has a non-zero value.

p.8
Echelon and Reduced Echelon Forms

What are matrices in reduced echelon form?

Matrices that are in echelon form with the additional property that each leading entry is 1 and is the only non-zero entry in its column.

p.28
Systems of Linear Equations

What is a matrix equation?

A matrix equation is an equation in which the unknowns are represented by matrices, and it can often be expressed in terms of vector equations.

p.39
Vector Spaces and Subspaces

What does it mean for a set of vectors to be closed under vector addition?

It means that the sum of any two vectors in the set is also a vector in the set.

p.62
Linear Combinations and Span

What is a vector in the context of bases?

A vector in the context of bases is an element of a vector space that can be expressed as a linear combination of the basis vectors.

p.55
Linear Independence and Bases

What does it mean for a basis to be linearly independent?

A basis is linearly independent if no vector in the basis can be expressed as a linear combination of the other vectors in the basis.

p.81
Diagonalization and Eigenvalues

What is an eigenspace?

An eigenspace is the set of all eigenvectors corresponding to a particular eigenvalue, along with the zero vector.

p.50
Linear Independence and Bases

What is a free variable in a linear system?

A free variable is a variable in a linear system that can take on any value, indicating that the system has infinitely many solutions due to the number of unknowns being greater than the number of equations.

p.79
Diagonalization and Eigenvalues

What is an eigenspace?

The set of all eigenvectors corresponding to an eigenvalue λ, together with the zero vector, is called the eigenspace of T corresponding to λ.

p.57
Linear Combinations and Span

What does it mean to find a vector in a given basis?

Finding a vector in a given basis involves expressing the vector as a linear combination of the basis vectors.

p.37
Vector Spaces and Subspaces

What is a subspace?

A subspace is a subset of a vector space that is itself a vector space, satisfying three properties: it contains the zero vector, is closed under vector addition, and is closed under scalar multiplication.

p.54
Coordinate Systems and Change of Basis

What are Coordinate Systems?

Coordinate Systems are frameworks that use numbers to uniquely determine the position of a point or other geometric element in a space of given dimensions.

p.71
Linear Transformations

What is a linear transformation?

A linear transformation is a function between two vector spaces that preserves the operations of vector addition and scalar multiplication.

p.16
Vectors in Euclidean Spaces

What does it mean to have two vectors?

Having two vectors refers to the existence of two distinct quantities that have both magnitude and direction, which can be represented graphically or mathematically.

p.42
Linear Combinations and Span

What is a linear combination?

A linear combination is an expression formed by multiplying each vector in a set by a scalar and then adding the results together.

p.44
Linear Independence and Bases

What is a linearly dependent set of vectors?

A set of only two vectors is linearly dependent if and only if one is a scalar multiple of the other.

p.64
Elimination Method and Matrix Form

GREAT trick

A clever method or technique used to simplify the process of solving equations or problems.

p.51
Vector Spaces and Subspaces

What does it mean if two bases for a vector space contain the same number of vectors?

If two bases for a vector space contain the same number of vectors, it implies that the dimension of the vector space is well-defined.

p.86
Diagonalization and Eigenvalues

What is the characteristic equation?

The characteristic equation is a polynomial equation derived from the determinant of a matrix subtracted by a scalar multiple of the identity matrix, used to find the eigenvalues of the matrix.

p.11
Systems of Linear Equations

What is an augmented matrix?

An augmented matrix is a matrix that includes the coefficients of a system of linear equations along with the constants from the equations, typically represented in a single matrix format.

p.56
Vector Spaces and Subspaces

What is a basis for a vector space?

A basis for a vector space is a set of vectors that are linearly independent and span the entire vector space.

p.62
Linear Transformations

What does it mean for two bases of a vector space to be related?

Two bases of a vector space are related if there exists a linear transformation that maps vectors from one basis to the other.

p.22
Vector Spaces and Subspaces

What does it mean for a vector to be in a vector space?

A vector is in a vector space if and only if the vector equation associated with that space has a solution.

p.100
Vectors in Euclidean Spaces

What is the definition of the set of all vectors with three entries?

The set of all vectors with three entries is denoted as R^3.

p.81
Diagonalization and Eigenvalues

What is an eigenvector?

An eigenvector is a non-zero vector that changes by only a scalar factor when a linear transformation is applied to it.

p.8
Echelon and Reduced Echelon Forms

What does the theorem about matrices state?

Every matrix can be changed to a unique reduced echelon matrix by row operations.

p.77
Diagonalization and Eigenvalues

What is Diagonalization?

Diagonalization is the process of finding a diagonal matrix that is similar to a given square matrix, which simplifies many matrix operations.

p.15
Vectors in Euclidean Spaces

What is a column vector?

A matrix with only one column is called a column vector, or simply a vector.

p.4
Linear Transformations

Step 4

In this step, you implement the actions identified in the previous step to begin solving the problem.

p.30
Vector Spaces and Subspaces

What is a Vector Equation?

A vector equation expresses a linear system in terms of vectors, showing the relationship between the variables and the constants in vector form.

p.49
Linear Independence and Bases

What is a basis in a vector space?

A basis is a set of vectors in a vector space that is linearly independent and spans the entire space.

p.89
Diagonalization and Eigenvalues

What are Eigenvalues?

Eigenvalues are scalars associated with a linear transformation that, when multiplied by an eigenvector, yield the same result as applying the transformation to that eigenvector.

p.60
Coordinate Systems and Change of Basis

What is the change-of-coordinates matrix?

The change-of-coordinates matrix is a matrix that transforms the coordinates of a vector from one coordinate system to another, specifically to the standard coordinates.

p.16
Vectors in Euclidean Spaces

What is the Geometry of Vectors in relation to a graph?

The Geometry of Vectors involves representing vectors graphically, showing their direction and magnitude in a coordinate system.

p.48
Linear Independence and Bases

What is a basis for the subspace?

A basis for a subspace is a set of vectors that are linearly independent and span the subspace.

p.85
Diagonalization and Eigenvalues

What is the Determinant of a triangular matrix?

The determinant of a triangular matrix (upper or lower) equals the product of its diagonal entries.

p.91
Diagonalization and Eigenvalues

What are Eigenvalues?

Eigenvalues are scalars associated with a linear transformation represented by a matrix, indicating how much the eigenvector is stretched or compressed during the transformation.

p.91
Diagonalization and Eigenvalues

What does it mean to Diagonalize a matrix?

Diagonalizing a matrix involves finding a diagonal matrix that is similar to the original matrix, which simplifies many matrix operations.

p.19
Vector Spaces and Subspaces

What does it mean for a vector to be in a subspace?

A vector is in a subspace if it satisfies the conditions of closure under addition and scalar multiplication within that subspace.

p.3
Elimination Method and Matrix Form

What is the second step in solving a system of linear equations using the Elimination Method?

Solve the resulting equation for the remaining variable and back-substitute to find the other variable.

p.98
Vector Spaces and Subspaces

What does the column vector represent in the context of a matrix?

Each column vector of the matrix can be viewed as the coordinate vector of itself in a specific basis.

p.46
Linear Independence and Bases

What does it mean when a system has a free variable?

It indicates that the system yields non-trivial solutions, suggesting that the vector equation is linearly dependent.

p.4
Linear Transformations

Step 3

This step involves analyzing the problem and determining the necessary actions to solve it.

p.80
Diagonalization and Eigenvalues

What is an eigenvector?

An eigenvector is a non-zero vector that changes by only a scalar factor when a linear transformation is applied to it.

p.79
Diagonalization and Eigenvalues

What is an eigenvector?

The non-zero vector v that satisfies the equation T(v) = λv for an eigenvalue λ is called an eigenvector corresponding to λ.

p.100
Vectors in Euclidean Spaces

What does R^n represent?

R^n is the set of all vectors with n entries, where n is any positive integer.

p.47
Linear Independence and Bases

What are the conditions for a set of vectors to be a basis?

The conditions are that the set must be linearly independent and the vectors must span the vector space.

p.32
Vector Spaces and Subspaces

What are the two operations defined in a Vector Space?

The two operations defined in a vector space are addition and scalar multiplication.

p.69
Linear Transformations

What does it mean to prove that a function is a linear transformation?

To prove that a function is a linear transformation, one must show that it satisfies two properties: it preserves vector addition and scalar multiplication.

p.88
Diagonalization and Eigenvalues

What is a diagonalizable matrix?

A square matrix is said to be diagonalizable if there exists a diagonal matrix and an invertible matrix such that the matrix equation is satisfied.

p.84
Diagonalization and Eigenvalues

What is the characteristic equation?

The characteristic equation is obtained by setting the characteristic polynomial equal to zero, used to solve for the eigenvalues of a matrix.

p.4
Linear Transformations

Step 5

This step focuses on evaluating the results of the actions taken to see if the problem has been solved.

p.65
Linear Transformations

What is a Linear Transformation?

A function between two vector spaces that preserves the operations of vector addition and scalar multiplication.

p.94
Diagonalization and Eigenvalues

What is a diagonal matrix?

A diagonal matrix is a matrix in which the entries outside the main diagonal are all zero, and the entries on the diagonal can be any value.

p.10
Systems of Linear Equations

What is an example of an inconsistent linear system?

An example of an inconsistent linear system is one where the equations represent parallel lines that never intersect, indicating no common solution.

p.16
Vectors in Euclidean Spaces

What is the significance of a scalar in relation to a vector?

A scalar is a single numerical value that can be used to scale a vector, affecting its magnitude but not its direction.

p.90
Systems of Linear Equations

Equivalence in Systems

The property that allows two systems of equations to have the same solution set, often verified through manipulation.

p.61
Coordinate Systems and Change of Basis

What is the Change of Coordinates Matrix?

The change-of-coordinates matrix is a matrix that transforms the coordinate vector of a vector in one basis to its coordinate vector in another basis within a vector space.

p.25
Linear Combinations and Span

What is the plane through the origin that contains two non-zero vectors?

The plane through the origin that contains two non-zero vectors is defined as the set of all linear combinations of those two vectors.

p.63
Linear Independence and Bases

What are bases in a vector space?

Bases in a vector space are sets of linearly independent vectors that span the entire space, allowing any vector in the space to be expressed as a linear combination of the basis vectors.

p.74
Linear Transformations

What is a linear transformation?

A linear transformation is a mapping between two vector spaces that preserves the operations of vector addition and scalar multiplication.

p.79
Diagonalization and Eigenvalues

What is an eigenvalue?

A scalar λ is called an eigenvalue of a linear transformation T if there exists a non-zero vector v such that T(v) = λv.

p.40
Linear Independence and Bases

What is the Span of a set of vectors?

The span of a set of vectors is the set of all possible linear combinations of those vectors.

p.32
Vector Spaces and Subspaces

What is a Vector Space?

A vector space is a non-empty set on which two operations, called addition and scalar multiplication, are defined that satisfy specific properties.

p.46
Linear Independence and Bases

What are non-trivial solutions in the context of vector equations?

Non-trivial solutions refer to solutions other than the zero vector, indicating that the vectors involved are linearly dependent.

p.66
Linear Transformations

What is a transformation in the context of vector spaces?

A transformation (or function or mapping) from one vector space to another is a rule that assigns to each vector in the domain a vector in the range.

p.83
Diagonalization and Eigenvalues

What is an eigenvalue?

An eigenvalue is a scalar associated with a linear transformation that indicates how much a corresponding eigenvector is stretched or compressed.

p.34
Vector Spaces and Subspaces

What is the significance of real coefficients in the context of degree two polynomials?

Real coefficients ensure that the polynomials belong to the set of real-valued functions, which is necessary for defining a vector space.

p.39
Vector Spaces and Subspaces

What does it mean for a set of vectors to be closed under scalar multiplication?

It means that multiplying any vector in the set by a scalar results in another vector that is also in the set.

p.55
Coordinate Systems and Change of Basis

How does a coordinate system relate to a vector space?

A coordinate system allows one to represent the vectors in a vector space in a manner similar to vectors in Euclidean space, facilitating operations and understanding of the space.

p.36
Vector Spaces and Subspaces

What is the smallest subspace of a vector space?

The smallest subspace of a vector space is the set that consists of only the zero vector.

p.66
Linear Transformations

What is the domain in a transformation?

The domain is the set of all vectors that the transformation takes as input.

p.82
Diagonalization and Eigenvalues

What is an eigenvalue?

An eigenvalue is a scalar associated with a linear transformation that indicates how much a corresponding eigenvector is stretched or compressed.

p.83
Diagonalization and Eigenvalues

What is the characteristic equation?

The characteristic equation is the equation derived from the determinant of a matrix minus a scalar times the identity matrix, which is used to find the eigenvalues of the matrix.

p.32
Vector Spaces and Subspaces

What is the significance of the zero vector in a Vector Space?

The zero vector is an element in a vector space such that for each vector in the space, there exists another vector that, when added to it, results in the zero vector.

p.50
Linear Independence and Bases

What does it mean for a linear system to have non-trivial solutions?

Non-trivial solutions refer to solutions of a linear system that are not the zero solution, indicating that the system has free variables and is linearly dependent.

p.67
Linear Transformations

What is a linear transformation?

A linear transformation from vector space A to vector space B is a transformation that satisfies the properties of additivity and homogeneity for any vectors u and v in A and any scalar c.

p.21
Echelon and Reduced Echelon Forms

What is the reduced echelon form?

The reduced echelon form is a specific type of matrix form where each leading entry is 1, each leading 1 is the only non-zero entry in its column, and the leading 1s move to the right as you move down the rows.

p.53
Linear Independence and Bases

What does it mean for a set of vectors to be linearly independent?

A set of vectors is linearly independent if no vector in the set can be expressed as a linear combination of the others.

p.42
Linear Independence and Bases

What does it mean for vectors to be linearly dependent?

Vectors are linearly dependent if there exist scalars, not all zero, such that a linear combination of the vectors equals the zero vector.

p.85
Diagonalization and Eigenvalues

What happens to the determinant when performing row or column operations on a matrix?

If a matrix is obtained by performing row (or column) operations on another matrix, the determinant may change according to specific rules related to the type of operation performed.

p.61
Coordinate Systems and Change of Basis

What does the Change of Basis theorem state?

The Change of Basis theorem states that for two bases of a vector space, there exists a matrix that changes the coordinate representation of vectors from one basis to another.

p.3
Elimination Method and Matrix Form

What is the first step in solving a system of linear equations using the Elimination Method?

Identify and manipulate the equations to eliminate one variable.

p.40
Linear Independence and Bases

What does it mean for vectors to be Linearly Independent?

Vectors are linearly independent if no vector in the set can be expressed as a linear combination of the others.

p.39
Vector Spaces and Subspaces

What is a subspace?

A subspace is a set of vectors that is closed under vector addition and scalar multiplication, containing the zero vector.

p.30
Matrix Equation and Matrix Form

What is a Matrix Equation?

A matrix equation is a mathematical expression that represents a system of linear equations in the form of a product of matrices.

p.57
Coordinate Systems and Change of Basis

What is a coordinate vector?

A coordinate vector represents a vector in terms of the basis vectors of a vector space.

p.28
Systems of Linear Equations

What is a vector equation?

A vector equation is an equation that expresses a relationship between vectors, often representing a system of linear equations in a compact form.

p.80
Diagonalization and Eigenvalues

What is an eigenvalue?

An eigenvalue is a scalar associated with a linear transformation that indicates how much the corresponding eigenvector is stretched or compressed.

p.77
Diagonalization and Eigenvalues

What are Eigenvalues?

Eigenvalues are scalars associated with a linear transformation represented by a matrix, indicating how much the eigenvector is stretched or compressed during the transformation.

p.46
Linear Independence and Bases

What does it mean for vectors to be linearly dependent?

Vectors are linearly dependent if at least one vector can be expressed as a linear combination of the others, leading to non-trivial solutions.

p.15
Vectors in Euclidean Spaces

What is the set of all real numbers?

The set of all real numbers is a fundamental concept in mathematics that includes all the numbers on the continuous number line.

p.69
Linear Transformations

What are the two properties that must be verified for a linear transformation?

The two properties are: 1) For any vectors u and v in the vector space, T(u + v) = T(u) + T(v); 2) For any scalar c and vector u, T(cu) = cT(u).

p.80
Diagonalization and Eigenvalues

What is an eigenspace?

An eigenspace is the set of all eigenvectors corresponding to a particular eigenvalue, along with the zero vector.

p.49
Linear Independence and Bases

What does it mean for a set to be linearly independent?

A set of vectors is linearly independent if no vector in the set can be expressed as a linear combination of the others.

p.78
Linear Transformations

What is a linear transformation?

A linear transformation is a mapping between two vector spaces that preserves the operations of vector addition and scalar multiplication.

p.35
Vector Spaces and Subspaces

What is a Subspace of a vector space?

A subspace of a vector space is a subset that satisfies three properties: it contains the zero vector, it is closed under addition, and it is closed under scalar multiplication.

p.31
Vector Spaces and Subspaces

What is a Vector Space?

A vector space is a collection of vectors that can be added together and multiplied by scalars, satisfying certain axioms such as closure, associativity, and distributivity.

p.36
Vector Spaces and Subspaces

What is the largest subspace of a vector space?

The largest subspace of a vector space is the vector space itself.

p.82
Diagonalization and Eigenvalues

What is an eigenspace?

An eigenspace is the set of all eigenvectors associated with a particular eigenvalue, along with the zero vector.

p.5
Elimination Method and Matrix Form

What is an augmented matrix?

An augmented matrix is a matrix that includes the coefficients of a system of linear equations along with the constants from the equations, typically used in the elimination method.

p.73
Linear Transformations

What does the matrix representation of a linear transformation depend on?

The matrix representation of a linear transformation depends on the chosen bases for the domain and codomain.

p.19
Vectors in Euclidean Spaces

What is the term for a vector being in a certain space?

A vector is said to be in a space if it can be expressed as a linear combination of the vectors that span that space.

p.58
Vectors in Euclidean Spaces

What are the coordinates of a vector in R^n?

The coordinates of a vector in R^n are the entries that represent its position in the n-dimensional space, typically denoted as (x1, x2, ..., xn).

p.30
Systems of Linear Equations

What is an Augmented Matrix?

An augmented matrix is a matrix that represents a linear system, including the coefficients of the variables and the constants from the equations.

p.57
Vector Spaces and Subspaces

What is a basis for a vector space?

A basis for a vector space is a set of vectors that are linearly independent and span the entire space.

p.55
Linear Independence and Bases

What is the Unique Representation Theorem?

The Unique Representation Theorem states that for a basis of a vector space, each vector in that space can be expressed uniquely as a linear combination of the basis vectors using a set of scalars.

p.34
Vector Spaces and Subspaces

What are the operations defined for the set of all degree two polynomials?

The operations defined are addition of polynomials and scalar multiplication for any scalar.

p.84
Diagonalization and Eigenvalues

What are eigenvalues?

Eigenvalues are scalars associated with a linear transformation represented by a matrix, indicating how much the eigenvector is stretched or compressed during the transformation.

p.56
Coordinate Systems and Change of Basis

What is a -coordinate vector?

A -coordinate vector is a column vector that represents the -coordinates of a vector in relation to a given basis.

p.9
Systems of Linear Equations

What are the three possibilities for the solution of linear systems?

1. The system has a unique solution. 2. The system has multiple solutions. 3. The system has no solution (inconsistent system).

p.76
Coordinate Systems and Change of Basis

What is the identity transformation in the context of changing basis for a vector space?

The identity transformation is a linear transformation that maps every vector in the vector space to itself, serving as a reference for changing bases.

p.100
Vectors in Euclidean Spaces

How do addition and scalar multiplication work for vectors in R^n?

For vectors in R^n, addition and scalar multiplication work the same way as for vectors in R^3.

p.28
Vectors in Euclidean Spaces

What are the columns of a matrix?

The columns of a matrix are the vertical arrays of numbers that represent the components of vectors in a vector space.

p.47
Linear Independence and Bases

What is an example of a standard basis?

The vectors 1, 0, and 0 form the standard basis in a three-dimensional vector space.

p.9
Systems of Linear Equations

What is a unique solution in the context of linear systems?

A unique solution refers to a single set of values that satisfies all equations in the linear system.

p.77
Diagonalization and Eigenvalues

What is an Eigenvector?

An eigenvector is a non-zero vector that changes by only a scalar factor when a linear transformation is applied to it, corresponding to a specific eigenvalue.

p.29
Systems of Linear Equations

What is a matrix equation?

A matrix equation is an equation in which the unknowns are represented as a matrix, and it expresses a relationship between matrices, typically involving multiplication and addition.

p.76
Coordinate Systems and Change of Basis

What does it mean to equip the domain and range with different bases in a vector space?

Equipping the domain with one basis and the range with another allows for the representation of linear transformations between different coordinate systems in the vector space.

p.88
Diagonalization and Eigenvalues

What does it mean to diagonalize a matrix?

To diagonalize a matrix means to find matrices such that the matrix equation involving a diagonal matrix and an invertible matrix is satisfied.

p.4
Linear Transformations

Step 6

The final step involves reflecting on the process and outcomes to improve future problem-solving strategies.

p.66
Linear Transformations

What is the range in a transformation?

The range is the set of all vectors that can be produced as output by the transformation.

p.65
Linear Transformations

What are the properties of Linear Transformations?

They must satisfy two properties: T(u + v) = T(u) + T(v) for all vectors u and v, and T(cu) = cT(u) for all vectors u and all scalars c.

p.95
Diagonalization and Eigenvalues

What are eigenvalues?

Eigenvalues are scalars associated with a linear transformation that indicate how much the transformation stretches or compresses vectors in the direction of their corresponding eigenvectors.

p.83
Diagonalization and Eigenvalues

What is the characteristic polynomial?

The characteristic polynomial is the polynomial obtained from the left side of the characteristic equation, which is a polynomial in terms of the eigenvalue.

p.77
Diagonalization and Eigenvalues

What is a Diagonal Matrix?

A diagonal matrix is a matrix in which the entries outside the main diagonal are all zero, making it easier to compute powers and exponentials of matrices.

p.83
Diagonalization and Eigenvalues

What does it mean for an equation to have non-trivial solutions?

An equation has non-trivial solutions if there exists at least one solution other than the zero vector.

p.78
Diagonalization and Eigenvalues

What does it mean for a matrix representation to be simple?

A simple matrix representation typically refers to a form that is easier to work with, such as a diagonal matrix, which simplifies calculations and understanding of the transformation.

p.97
Diagonalization and Eigenvalues

What is the significance of the change-of-coordinates matrix in diagonalization?

The change-of-coordinates matrix is used to transform the representation of a linear transformation from one basis to another, facilitating the diagonalization process.

p.17
Vectors in Euclidean Spaces

What is the Associative Property of Vector Addition?

The Associative Property states that for any vectors u, v, and w, (u + v) + w = u + (v + w).

p.94
Diagonalization and Eigenvalues

What is meant by similar matrices?

Two matrices are said to be similar if one can be transformed into the other by a change of basis, specifically if there exists an invertible matrix such that one matrix is the product of the other and the invertible matrix's inverse.

p.31
Vector Spaces and Subspaces

What are the axioms of a Vector Space?

The axioms of a vector space include closure under addition and scalar multiplication, existence of an additive identity and inverses, and properties like associativity and distributivity.

p.29
Systems of Linear Equations

What is a linear system?

A linear system is a collection of one or more linear equations involving the same variables, which can be represented in matrix form.

p.35
Vector Spaces and Subspaces

What does it mean for a Subspace to be closed under scalar multiplication?

It means that for any vector in the subspace and any scalar, the product of the scalar and the vector is also in the subspace.

p.17
Vectors in Euclidean Spaces

What does Commutativity mean in the context of vector addition?

Commutativity in vector addition means that for any vectors u and v, u + v = v + u.

p.7
Echelon and Reduced Echelon Forms

What is echelon form?

Echelon form is a type of matrix form where all non-zero rows are above any rows of all zeros, and the leading coefficient of a non-zero row is to the right of the leading coefficient of the previous row.

p.49
Linear Independence and Bases

What is the significance of the theorem regarding linearly independent sets in a vector space?

The theorem states that any linearly independent set in a vector space with basis must contain no more than the number of vectors in the basis.

p.36
Vector Spaces and Subspaces

What is the set of all degree polynomials with real coefficients?

The set of all degree polynomials with real coefficients is a subspace of the vector space of all polynomials.

p.35
Vector Spaces and Subspaces

What does it mean for a Subspace to be closed under addition?

It means that for any two vectors in the subspace, their sum is also in the subspace.

p.82
Diagonalization and Eigenvalues

What is a basis for an eigenspace?

A basis for an eigenspace is a set of linearly independent eigenvectors that span the eigenspace.

p.97
Diagonalization and Eigenvalues

What is a diagonal matrix in the context of diagonalization?

A diagonal matrix is a matrix in which the entries outside the main diagonal are all zero, and it represents the linear transformation in a simplified form when the transformation is diagonalizable.

p.59
Linear Combinations and Span

What is a vector equation in the context of linear algebra?

A vector equation is an equation that expresses a vector as a linear combination of other vectors, often used to solve for unknown coefficients.

p.9
Systems of Linear Equations

What does it mean when a linear system has multiple solutions?

Multiple solutions indicate that there are infinitely many sets of values that satisfy the equations in the linear system.

p.59
Vector Spaces and Subspaces

What is a basis in the context of vector spaces?

A basis is a set of vectors in a vector space that are linearly independent and span the entire space.

p.31
Vector Spaces and Subspaces

What is the zero vector?

The zero vector is the additive identity in a vector space, which, when added to any vector, results in that vector.

p.17
Vectors in Euclidean Spaces

What is the Distributive Property in relation to scalar multiplication?

The Distributive Property states that for any scalar a and vectors u and v, a(u + v) = au + av.

p.29
Systems of Linear Equations

What is a vector equation?

A vector equation is an equation that expresses a relationship between vectors, often representing a linear combination of vectors equal to another vector.

p.15
Vectors in Euclidean Spaces

What is scalar multiplication in the context of vectors?

Scalar multiplication is the operation of multiplying a vector by a scalar (number), resulting in a new vector.

p.78
Linear Transformations

What is the significance of choosing a basis in linear transformations?

Choosing a basis can simplify the matrix representation of a linear transformation, potentially allowing it to be represented as a diagonal matrix.

p.95
Diagonalization and Eigenvalues

What does it imply if a matrix is not diagonalizable?

If a matrix is not diagonalizable, it means that there are not enough linearly independent eigenvectors to form a basis for the vector space, preventing the matrix from being expressed in diagonal form.

p.7
Elimination Method and Matrix Form

What is the Elimination Method?

The Elimination Method is a technique used to solve systems of equations by transforming them into equivalent systems through a series of row operations.

p.97
Diagonalization and Eigenvalues

What does it mean for a matrix to be invertible in the context of diagonalization?

An invertible matrix is a matrix that has an inverse, meaning there exists another matrix such that their product is the identity matrix, which is crucial for expressing the linear transformation in terms of a diagonal matrix.

p.50
Linear Independence and Bases

What does it imply if a linear system is linearly dependent?

If a linear system is linearly dependent, it implies that at least one of the equations can be expressed as a linear combination of the others, leading to the existence of free variables and non-trivial solutions.

p.65
Linear Transformations

What is the kernel of a Linear Transformation?

The set of all vectors in the domain that are mapped to the zero vector in the codomain.

p.17
Vectors in Euclidean Spaces

What are the Algebraic Properties of Vectors?

Algebraic properties of vectors include operations such as addition, scalar multiplication, and their respective properties like commutativity, associativity, and distributivity.

p.17
Vectors in Euclidean Spaces

What is Scalar Multiplication?

Scalar multiplication is the operation of multiplying a vector by a scalar, resulting in a vector that is scaled in magnitude but retains its direction.

p.7
Echelon and Reduced Echelon Forms

What is reduced echelon form?

Reduced echelon form is a matrix form where, in addition to being in echelon form, each leading coefficient is 1 and is the only non-zero entry in its column.

p.76
Coordinate Systems and Change of Basis

What is the matrix representation with respect to different bases in a vector space?

The matrix representation with respect to two bases provides a way to express the linear transformation in terms of the coordinates defined by those bases.

p.66
Linear Transformations

What is the image of a vector under a transformation?

The image of a vector under a transformation is the vector in the range that corresponds to the input vector from the domain.

p.7
Elimination Method and Matrix Form

What are row operations in the Elimination Method in Matrix Form?

Row operations are operations performed on the rows of a matrix to simplify it, including row swapping, scaling a row by a non-zero scalar, and adding or subtracting rows.

p.35
Vector Spaces and Subspaces

What are the three properties that define a Subspace?

1. The zero vector is in the subspace. 2. The subspace is closed under addition. 3. The subspace is closed under scalar multiplication.

p.9
Systems of Linear Equations

What is an inconsistent system in linear equations?

An inconsistent system is one that has no solution, meaning there are no sets of values that can satisfy all equations simultaneously.

p.88
Diagonalization and Eigenvalues

What are the column vectors of a diagonalizable matrix?

The column vectors of a diagonalizable matrix are the corresponding eigenvectors of the matrix.

p.65
Linear Transformations

What is the image of a Linear Transformation?

The set of all vectors in the codomain that can be expressed as T(v) for some vector v in the domain.

p.7
Elimination Method and Matrix Form

What are equivalent systems in the context of the Elimination Method?

Equivalent systems are systems of equations that have the same solution set, meaning they represent the same geometric object in a given space.

p.59
Elimination Method and Matrix Form

What is a matrix equation in linear algebra?

A matrix equation is an equation that involves matrices and vectors, often used to represent systems of linear equations.

p.88
Diagonalization and Eigenvalues

What are the diagonal entries of a diagonalizable matrix?

The diagonal entries of a diagonalizable matrix are the eigenvalues of the matrix.

p.49
Linear Independence and Bases

What does it imply if a set of three vectors is linearly dependent?

If a set of three vectors is linearly dependent, it means at least one of the vectors can be expressed as a linear combination of the others.

p.97
Diagonalization and Eigenvalues

What is the Theorem of Diagonalization in the light of Linear Transformation?

It states that for a linear transformation, if the matrix representation with respect to the standard basis is diagonalizable, then it can be expressed as a product of a diagonal matrix and an invertible matrix, with a basis consisting of the column vectors of the invertible matrix.

p.36
Vector Spaces and Subspaces

What is the set of all lower triangular matrices with real coefficients?

The set of all lower triangular matrices with real coefficients is a subspace of the vector space of all matrices.

p.7
Elimination Method and Matrix Form

What is an augmented matrix?

An augmented matrix is a matrix that includes the coefficients of a system of equations along with the constants from the equations, allowing for the application of row operations.

p.82
Linear Independence and Bases

What does it mean for vectors to be linearly independent?

Vectors are linearly independent if no vector in the set can be expressed as a linear combination of the others.

p.31
Vector Spaces and Subspaces

What is a subspace?

A subspace is a subset of a vector space that is itself a vector space, meaning it is closed under addition and scalar multiplication and contains the zero vector.

p.29
Systems of Linear Equations

What is an augmented matrix?

An augmented matrix is a matrix that includes the coefficients of the variables and the constants from the equations of a linear system, typically used to solve the system using row operations.

p.59
Coordinate Systems and Change of Basis

What is a coordinate vector?

A coordinate vector is a representation of a vector in terms of the basis vectors of a vector space, indicating how much of each basis vector is needed to express the vector.

p.95
Linear Independence and Bases

What does it mean for an eigenspace to be one-dimensional?

An eigenspace is one-dimensional if it has a basis consisting of a single eigenvector, meaning that all eigenvectors corresponding to a particular eigenvalue are scalar multiples of that eigenvector.

p.36
Vector Spaces and Subspaces

What is the set of all matrices with real entries?

The set of all matrices with real entries is a vector space.

p.59
Linear Combinations and Span

What does it mean to find the coordinate vector of a vector with respect to a basis?

Finding the coordinate vector involves expressing the vector as a linear combination of the basis vectors and determining the coefficients of this combination.

p.78
Coordinate Systems and Change of Basis

What is the standard basis?

The standard basis is a set of vectors that are used as a reference for vector spaces, typically consisting of unit vectors along each axis.

Study Smarter, Not Harder
Study Smarter, Not Harder