Hi, Can someone tell me how to do this integration problem by parts please, its driving me mental .

Thanks

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- Dec 2nd 2010, 11:50 AMwolfhoundIntegration by parts problem
Hi, Can someone tell me how to do this integration problem by parts please, its driving me mental .

Thanks - Dec 2nd 2010, 11:56 AMe^(i*pi)
- Dec 2nd 2010, 12:07 PMwolfhound
Thank you very much for that!

while we are on the subject, one more problem please

This integrate : -336x(4x+4)^(13) dx

u=-336x du=-336

dv=(4x+4)^(13)

v=__(4x+4)__^(14)

...... 14

and I got -24x(4x+4)^(14) +__24(4x + 4)__^(15) + C

.... ................ .................... 60

I think my answer is wrong ? - Dec 2nd 2010, 12:25 PMe^(i*pi)
You could always use the binomial theorem to expand (Wink)

It looks like you haven't divided by 4 when finding v.

I would be inclined to say that

is a massive number but it is, and thus acts like, a constant - Dec 2nd 2010, 12:31 PMwolfhound
Excellent, thanks :)

- Dec 2nd 2010, 12:39 PMharish21
- Dec 2nd 2010, 12:44 PMwolfhound
Thanks :)

- Dec 2nd 2010, 12:48 PMharish21
- Dec 2nd 2010, 12:55 PMwolfhound
Thanks again people:) ..