Matrix multiplication&subtraction

Posted 2020-10-08

1.1  Matrix multiplication

　　If A is an n×m matrix and B is an m×p matrix, The matrix product AB (denoted without multiplication signs or dots) is defined to be the n×p matrix.

    1. Examples of matrix products

2. Why Do It This Way?

   3. Scalar Matrix Multiplication

 

1.2 Subtracting Matrices