In Exercises 1-18, either perform the indicated operations or state that the expression is undefined. Given matrices A, B, C, D, E, and F, where:
A=[1 2]
[3 −1],
B=[2 −1]
[−3 −2],
C=Undefined,
D=[−3 2]
[1 1],
E=[1 −14 2]
[−3 6 1]
[0 1 3],
perform the following operations:
2B
