1. Verify the associative property by finding A(BC) and (AB)C. 2. Give an example of two matrices that cannot be multiplied. 3. Describe two ways of determining whether two matrices can be multiplied....

1. Verify the associative property by finding A(BC) and (AB)C.

2. Give an example of two matrices that cannot be multiplied.

3. Describe two ways of determining whether two matrices can be multiplied.

4. Give an example of two matrices AB such that AB exists but BA does not exist. Do not use any matrices in this book.

5. What must be true about matrices A and B if the products AB and BA both exist?