I'm having a lot of problems figuring out this question. If someone could at least point me in the right direction that would be great.
"Prove that for every positive integer n , (d^n / dx^n)[xe^-x] = (-1)^n e^-x(x-n)"
Last edited by mr fantastic; December 7th 2008 at 06:22 PM.
Reason: Question restored by Mr F (the OP deleted it for 'privacy' reasons - there ain't no such thing on the web, honey).