This question is ugly,(adsbygoogle = window.adsbygoogle || []).push({});

∫√tan(θ)dθ

His hints were first use the substitution u=tan(θ) then use the substitution u=x^2

I then had 2∫(x^2dx)/(sec^2(θ)

I let x=tan(θ) so that dx=sec^2(θ)dθ

And then got 2∫tan^2(θ)dθ

which I got as 2tan(θ)-2θ+C, and d/dx of that is not √tan(θ)

Any thoughts?

**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: Another Math Question

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