User talk:Dev follower of maths

In regard to your question on matrix multiplication: Think of it like this:

\begin{align} u & = 3x - 5y \\ v & = 7x + 8y \\ \\  \\ p & = 2u + 51v \\ q & = -3u + 2v \\ \\ \text{Therefore} \\ p & = (\text{?})x + (\text{?})y \\ q & = (\text{?})x + (\text{?})y. \end{align} $$ That's matrix multiplication. When you figure out how to fill in the blanks, then you have the answer to your question. Michael Hardy (talk) 01:15, 31 December 2010 (UTC)