Let A = [-2 4] , and B= [-2. 1]

^{1 3 3 8}

a. Find AB, if possible.

A. AB= _______.

B. The product AB cannot be found.

b. Find BA, if possible.

A. BA= ________.

B. the product BA cannot be found.

c.Are the answers in parts a and b the same?

A. yes

B. no

d. Ingeneral, for matrices A and B such that AB and BA bothexist, does AB always equalBA?

A. Yes

B. No