http://www.xtremepapers.com/papers/...S Level/Mathematics (9709)/9709_w11_qp_33.pdf(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

no. 10i

cant do ii and iii without doing i first

2. Relevant equations

tan(x)

d/dx(tan(x))=sec^2x

1+tan^2x=sec^2x

3. The attempt at a solution

Okay, my terms at first would be u^n+2 +u^n. Then, du/dx = sec^2x, so i get du/1+u^2 = dx.

In the end i got (u^n+2 +u^n)/1+u^2. From then on im stuck. Or did i do something wrong at first?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Integration question with power of n

**Physics Forums | Science Articles, Homework Help, Discussion**