- #1

- 12

- 0

## Homework Statement

Integral: Upper limit is pie/3, lower limit is 0. secxtanx(square root of 1+secx)dx

Sorry if this is confusing, I don't know how to use the real math symbols.

## The Attempt at a Solution

I realized it is U-substitution and not the FTC.

u=1+secx dx=sextanx du

when x=0, u=2 & x=pie/3, u=3.

I don't really know what to do after that, I'm a total noob at u-sub. Please help.