Denoting we have:
So we can write:
I'm a little stuck on this question, i need to work out the matrix A given the conditions, i have a picture of it here:
http://dl.dropbox.com/u/48169762/Capture.PNG
How do i know what dimensions A would be or how to correctly deduce it? it could be 3x3, 2x3, 1x3??
Thanks for any help