i hope you can help i am soooo stuck here goes: a)

A= 0 1 B= 1 1 c= 2 5 0 2 3 4 3 4

A,B and c are matrices Evaluate AB and Ac (which I can do)

then

b)

I need to prove that if the matrix A is inverible and AB =AC, then B = C. Why does this not contradict what happened in part a)?

Answered by Leeanne Boehm.