SOLUTION: Write two 2 x 2 matrices A and B. Show that multiplication of matrices is not commutative.

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Question 175884: Write two 2 x 2 matrices A and B. Show that multiplication of
matrices is not commutative.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let matrix A be %28matrix%282%2C2%2C2%2C1%2C4%2C+-2%29%29
let matrix B be %28matrix%282%2C2%2C3%2C-4%2C5%2C1%29%29
:
AB=%28matrix%282%2C2%2C2%2C1%2C4%2C+-2%29%29%28matrix%282%2C2%2C3%2C-4%2C5%2C1%29%29=%28matrix%282%2C2%2C1%2C-7%2C22%2C-12%29%29
:
BA=%28matrix%282%2C2%2C3%2C-4%2C5%2C1%29%29%28matrix%282%2C2%2C2%2C1%2C4%2C+-2%29%29=%28matrix%282%2C2%2C14%2C11%2C6%2C7%29%29