This is what I get:
If you're wondering what happened to the term with u times the exponential that "should" be there, it's zero because it's the integral of an odd function.
I need help... I'm stuck in this question... I'm still not totally confident in LaTeX, so I'll try to insert the exported image from Mathtype.
I really hope someone can give a helping hand with this... Sometimes people are afraid to ask of help - this isn't such a time. : o) Any help would be appreciated! Notice the hints - they were supposed to make it a whole lot easier - I'm still struggling though.