Hi guys... I've been working on this problem for(adsbygoogle = window.adsbygoogle || []).push({}); 30minutes... yes I'm stupid. Seriously I'm thinking right now what the hell I'm going to do. Out of every 4 problems I get 3 wrong and re-do them... I understand where I went wrong but I'm not getting any better. Scary times.

Well here it is (btw { = integral of ) :

the second part is cosine cubed (not x).Code (Text):{ (x)^3 * (cos (x))^3 dx

Here's what I got after doing integration by parts 3 times...

Code (Text):

x^3 * (sin(x))^2 + x^2 * (cos(x))^2 - 2 * (sin(x))^3

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# Homework Help: Integration help

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