Hi, I have a matrices question..

Suppose CA = I(n).

Find a solution to Ax = 0, and prove that this i s the only solution, justify.

I struggle with the way some maths questions are worded.

As I understand this is a homogeneous equation, and they have at least one solution, the trivial solution where x = 0.

So I'm to show that there is no non trivial solution and x must equal 0?

If this reasoning is correct then I don't fully understand what CA = I(n) means and how to use it?

Can someone enlighten me?