# Homework Help: Help me solve this limit.

1. Sep 9, 2010

### abruski

1. The problem statement, all variables and given/known data
$$\lim_{x \rightarrow \frac{\pi}{4}} \frac{\sqrt[3]{tgx} - 1}{2sin^2x-1}$$

2. Relevant equations

3. The attempt at a solution
I don't even know where to begin

2. Sep 9, 2010

### Staff: Mentor

Does tgx mean tan(x)? If that's what is meant, tgx is very unclear.

Assuming that tan(x) is what we're dealing with, the limit has the indeterminate form [0/0], so L'Hopital's Rule is applicable.