Hi, i'm struggling with this question and really need a push in the right direction... i haven't the faintest idea of what to do here... we haven't learnt about transposing maxtrices yet, I just saw something about it in a text book so I have a vague idea, but I don't really know how to go about proving this:
If A is an m x n matrix with (i,j)- entry , let be the n x m matrix with (i,j)- entry . Show that if the product C= AB is defined, then so is , and that .
I'd really appreciate any help you guys could give me, cheers.
thanks in advance!
May 14th 2011, 06:55 PM
I think you need to apply the properties of matrix tranposition