How do you solve this kind of problem?

**honestliar** · September 7th 2009, 04:52 AM

$\int(1-cos^{2}x)cos^{2}xsinx dx$

thanks

**mr fantastic** · September 7th 2009, 05:03 AM

Originally Posted by honestliar

$\int(1-cos^{2}x)cos^{2}xsinx dx$

thanks

Substitute u = cos x.

**honestliar** · September 7th 2009, 05:23 AM

Originally Posted by mr fantastic

Substitute u = cos x.

Can you please show it step by step?
Thanks

**HallsofIvy** · September 7th 2009, 06:10 AM

What part can you not do for yourself? If u= cos x, what is du? Do you see how that helps?

**JML** · September 7th 2009, 06:22 AM

hint: let u=cos(x) then $\frac{du}{dx} = -sin(x)$

Thread: How do you solve this kind of problem?