9.5.4 Multiplying Matrices

Question 1

notes

Answer 1

• To successfully multiply two matrices, the number of columns in the left matrix must equal the number of rows in the right matrix.
• It is possible that one matrix can multiply with a second matrix, but not be able to multiply if their positions are reversed.
• The dimension of a matrix is referred to by the number of rows x the number of columns.
• The solution matrix will have the same number of rows as the left matrix and the same number of columns as the right matrix