# How to finish this question

1. Dec 20, 2008

### transgalactic

i need to find for what values X is defined in the given function

i found for the sin part and for the the square root but i dont know how to combine them
http://img168.imageshack.us/img168/1434/39293849jq8.gif [Broken]

Last edited by a moderator: May 3, 2017
2. Dec 20, 2008

### Hootenanny

Staff Emeritus
I'm afraid that I do not agree with your interval for t.

Last edited by a moderator: May 3, 2017
3. Dec 20, 2008

### HallsofIvy

Staff Emeritus
Among other things you have written
$$\pi+ 2k\pi\le t\le 0+ 2k\pi$$
which implies that $\pi$ is negative!

sin(t) is defined for ALL t. $sin(\sqrt{x})$ is defined as long as $\sqrt{x}$ is.

Last edited: Dec 20, 2008