1. 4-3 Matrix Multiplication Objective: To multiply a matrix by a scalar multiple

2. Ex 13

3. Ex 14

4. Ex 15

5. Ex 16

6. 4-3 Part II Multiplying Matrices Objective: To multiply Matrices

7. Ex 1:

8. Ex 2

9. Is Matrix Multiplication Commutative? Explain.

10. Note: A product of 2 matrices A and B exists IF and Only IF… The # of columns of A is the same as the # of rows of B. For instance 2 x 3 and a 3 x 4

11. Ex 3: Find each product (If it exists)

12. Ex 4:

13. Ex 5:

14. AssignmentAssignment Pg 186 2 1-0 evens, 12-18 evens 20-28 evens (don’t multiply)