# Math Help - How do you solve this kind of problem?

1. ## How do you solve this kind of problem?

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

thanks

2. Originally Posted by honestliar
$\int(1-cos^{2}x)cos^{2}xsinx dx$

thanks
Substitute u = cos x.

3. Originally Posted by mr fantastic
Substitute u = cos x.
Can you please show it step by step?
Thanks

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

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