Khan Academy
Khan Academy: Basic Matrix Operations: Matrix Addition and Subtraction
Adding and subtracting matrices.
Khan Academy
Khan Academy: Calculating Matrix of Minors and Cofactor Matrix
Inverting a 3x3 matrix then calculate the matrix of minors and the cofactor matrix.
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 Transformations as Matrix Vector Products
A video showing how any linear transformation can be represented as a matrix vector product.
Khan Academy
Khan Academy: Inverting 3 X3 Part 2: Determinant and Adjugate of a Matrix
This is part two of video about 3x3 matrix inversion.
Khan Academy
Khan Academy: Linear Algebra: Linear Transformations: Scaling and Reflections
Video first reviews how to find the transformation matrix using the identity matrix. Shows how to write a transformation matrix that reflects over the y-axis and scales the y-coordinates by a factor of 2. [15:13]
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: Alternate Basis Transformation Matrix Example Part 2
Showing that the transformation matrix with respect to basis B actually works. Brief point on why someone would want to operate in a different basis to begin with.
Khan Academy
Khan Academy: Alternate Basis Transformation Matrix Example
Example of finding the transformation matrix for an alternate basis.
Sophia Learning
Sophia: Using Determinants to Classify 2x2 Matrices
This lesson demonstrates how the determinant of a 2x2 matrix can be used to tell whether or not the matrix represents a dependent linear system, an inconsistent linear system, or neither.
Sophia Learning
Sophia: Vectors and Tensors: Lesson 3
In this lesson, students are introduced to vectors and tensors, and their significance when working with matrices. Students should be familiar with the concept of a matrix before beginning this lesson. It is 3 of 4 in the series titled...
Sophia Learning
Sophia: Matrix Multiplication
This lesson introduces matrix multiplication, distinguishes it from multiplying by a scalar, and provides examples of the operation.
Sophia Learning
Sophia: Vectors and Tensors: Lesson 4
In this lesson, students are introduced to vectors and tensors, and their significance when working with matrices. Students should be familiar with the concept of a matrix before beginning this lesson. It is 4 of 4 in the series titled...
Other
Study Force: How to Multiply a Row Vector to a Matrix
This video models clearly how to multiply a row vector, which is equivalent to a one-column matrix, by a matrix. It explains that the dimension of the resultant matrix will have the number of rows of the first matrix and the number of...