- #1

- 9

- 0

## Homework Statement

## Homework Equations

None. Well, dx=du/cosx

## The Attempt at a Solution

I've substituted it in, got new values for the limits but I have u^-1 on the bottom and so can't integrate it from my current knowledge. Basically I'm stuck with:

Integration of u^(-1) du with limits of 1 and 2.

Any help appreciated. Apologies for not being able to work the Latex system.