I have a question, wish learning about various way, and really need help. ( Refer to "Cramer's Rule" http://communities.ptc.com/message/152738#152738 )
Thanks in advance for any suggestion.
If these were not matrices you would have one equation in three unknowns--that problem has no unique solution. I'm pretty sure the same rules apply to matrices.
I can think of one solution easily: X and Y are 4x4 identity matrices.
Thanks for your suggestion, Fred.
"that problem has no unique solution" Thanks again for that. And I think I am a new with built-in lu( ) function.