Compiling LaTeX code online

Hey,

I'm just going to use this to do some mathematics to send to a very special person ;) , basically hogging your equation software thing. Just to make it useful, I'll explain what is to be done.

Basically what we're doing here is finding out if a function is even or odd.

If then the function is odd.

If then the function is even.

If or then the function is neither even or odd.

An example:

Say we have

To find out if it's odd or even we find

Which is

so

which means

So that means the function

Is even because