# Intergration by parts help

1. Jun 27, 2004

### Spectre32

I'm stuck on this one problem. If anyone can aid me, I would greatly appericate it.

http://home.comcast.net/~personalcomp1/Impossible_calc_problem.JPG [Broken]

I scaned in the problem sooo theres the place to view it.

Thanks

Last edited by a moderator: May 1, 2017
2. Jun 27, 2004

### Parth Dave

you can write it as sec^(n-2)x*sec^2xdx and see where that takes you.

3. Jun 27, 2004

### Spectre32

Roger that.. i'll do that and see where that takes me.

4. Jul 2, 2004

### maverick280857

Here's the neater version (avoid the f(x) and g(x)'s when solving problems) of the integration by parts rule:

$$\int u dv = uv - \int v du$$

Now follow Parth Dave's advice. I mentioned this as some old books still use f(x) and g(x) instead of the neater looking u and v. (Oh well, you might use f and g instead of u and v ;-))

Cheers
Vivek