Question

Evaluate the definite integral
QUESTION:
http://i1084.photobucket.com/albums/j409/QRAWarrior/MATA30/MATA30Y-WA-AttemptQ1.png

ATTEMPT:
Here is my attempt (Some of the portions got cut off. If there is anything confusing about it, please ask)
http://i1084.photobucket.com/albums/j409/QRAWarrior/MATA30/MATA30Y-WA-Attempt1.png

Answer 1

Ok, the ideas you're using are good. You miss a minus in the power of e when you first start with partial integration though.

Answer 2

So it should be \[-x^2e^{-x}|^1_0\]

Answer 3

You forgot the factor 2 at the second integration by parts.