Thanks. In fact, after I wrote this post I went to lunch and I couldn't stop thinking about it and came up with the solution on a napkin. I formulated in terms of vector and matrices and solved for it.
Now that I know how to solve for it I just have to figure out how to prove it.
Thanks...
Thank you Martin. I spent a long time thinking about how to represent x + y as a linear combination of those two and couldn't figure it out. Now that I see the answer its pretty obvious.
Is there a systematic approach to figuring it out or did you just do it in your head.
Thank you,
-= Dave
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