Brightstorm
Square Matrices - Concept
No, matrices are not what mathematicians sleep on. Lesson begins with identifying the dimensions of matrices then moves on to multiply them. It also provides guided practice problems that get progressively more complex.
Khan Academy
Khan Academy: Algebra: Matrices: Matrix Multiplication (Part 2)
This lesson goes through three examples of matrix multiplication. Explains how the dimensions of matrices affect whether or not the matrices can be multiplied, how to determine if they can be multiplied, and what size the resulting...
Khan Academy
Khan Academy: Linear Algebra: Distributive Property of Matrix Products
Video shows that the distributive property is true for multiplying matrices. [9:52]
Khan Academy
Khan Academy: Linear Algebra: Transpose of a Matrix Product
Video demonstrating that the transpose of the product of two matrices is equivalent to the product of their transposes in reversed order. [8:50]
Khan Academy
Khan Academy: Linear Algebra: Singular Matrices
Video explains why a matrix is singular if its determinant is 0. Illustrates that when a matrix equation is built with a singular matrix, then there are no solutions because the system it represents is that of two parallel lines. Shows...
Khan Academy
Khan Academy: Linear Algebra: More on Matrix Addition and Scalar Multiplication
Video reviews what was shown in the previous video that the sum of two linear transformations is the sum of their transformation matrices and the scalar multiple of a transformation is the scalar multiple of the transformation matrix....
Khan Academy
Khan Academy: Algebra: Matrices: Matrix Multiplication (Part 1)
A lesson on multiplying matrices. Gives an example of two 2 X 2 matrices being multiplied. Illustrates that matrix multiplication is not commutative and that the order in which matrices are multiplied is important. [13:41]
Khan Academy
Khan Academy: Linear Algebra: Singular Matrices
Video explains why a matrix is singular if its determinant is 0. Relates why the inverse does not exist to solving systems of linear equations and vector combinations. This video also appears in the strand Algebra: Matrices. [14:27]
Khan Academy
Khan Academy: Inverting Matrices: Singular Matrices
Video explains why a matrix is singular if its determinant is 0. Relates why the inverse does not exist to solving systems of linear equations and vector combinations.
Khan Academy
Khan Academy: Basic Matrix Operations: Matrix Addition and Subtraction
Adding and subtracting matrices.
Sophia Learning
Sophia: Using Elementary Row Operations to Solve for Systems of Equations
This video lesson demonstrates how to solve a system of linear equations by using matrix row operations. Students can check their understanding with an assessment.
Khan Academy
Khan Academy: Basic Matrix Operations: Transpose of a Matrix
A video of how to transpose a matrix. [3:42]
Khan Academy
Khan Academy: Linear Algebra: More on Matrix Addition and Scalar Multiplication
Video reviews what was shown in the previous video that the sum of two linear transformations is the sum of their transformation matrices and the scalar multiple of a transformation is the scalar multiple of the transformation matrix....
Khan Academy
Khan Academy: Linear Algebra: More on Matrix Addition and Scalar Multiplication
Video reviews what was shown in the previous video that the sum of two linear transformations is the sum of their transformation matrices and the scalar multiple of a transformation is the scalar multiple of the transformation matrix....
Khan Academy
Khan Academy: More on Matrix Addition and Scalar Multiplication
Video shows that the sum of two linear transformations is the sum of their transformation matrices and the scalar multiple of a transformation is the scalar multiple of the transformation matrix.
Khan Academy
Khan Academy: Properties of Matrix Multiplication: Intro to Identity Matrix
Just as any number remains the same when multiplied by 1, any matrix remains the same when multiplied by the identity matrix. [7:59]
Khan Academy
Khan Academy: Adding & Subtracting Matrices
Sal defines what it means to add or subtract matrices. He shows a few examples and discusses some important properties of matrix addition and subtraction.
Sophia Learning
Sophia: Matrix Multiplication: Lesson 4
This lesson introduces matrix multiplication, distinguishes it from multiplying by a scalar, and provides examples of the operation. It is 4 of 2 in the series titled "Matrix Multiplication."
Sophia Learning
Sophia: Matrix Multiplication: Lesson 8
This lesson introduces matrix multiplication, distinguishes it from multiplying by a scalar, and provides examples of the operation. It is 8 of 2 in the series titled "matrix multiplication."
Sophia Learning
Sophia: Multiplying Matrices by Scalar Values: Lesson 2
This lesson explains how to multiply a matrix by a scalar. It is 2 of 5 in the series titled "Multiplying Matrices by Scalar Values."
Sophia Learning
Sophia: Multiplying Matrices by Scalar Values: Lesson 4
This lesson explains how to multiply a matrix by a scalar. It is 4 of 5 in the series titled "Multiplying Matrices by Scalar Values."
Sophia Learning
Sophia: Multiplying Two Large Matrices: Lesson 3
This lesson demonstrates multiplication of 4x4 and larger matrices. It is 3 of 7 in the series titled "Multiplying Two Large Matrices."
Sophia Learning
Sophia: Multiplying Two Large Matrices: Lesson 5
This lesson demonstrates multiplication of 4x4 and larger matrices. It is 5 of 7 in the series titled "Multiplying Two Large Matrices."
Sophia Learning
Sophia: Multiplying Two Large Matrices: Lesson 1
This lesson demonstrates multiplication of 4x4 and larger matrices. It is 1 of 7 in the series titled "Multiplying Two Large Matrices."