Solve for the following:

a. Find AB, if possible.

b. Find BA, if possible.

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

d. In? general, for matrices A and B such that AB and BA both? exist, does AB always equal? BA?

Math 171 - Fall 2018/201 Homework : HW : Matrix Arity 1/ 1 Score : 0 of 3 pts 2 2.4.31 Let A = 1 41 and B = - 2 1 a Find AB , if possible b . Find BA if possible C . Are the answers in parts a and b the same ? d . In general for matrices A and B such that AB and BA both exist , doe