Homework Help: Limits of a fourier integral

1. Dec 6, 2011

Studious_stud

1. The problem statement, all variables and given/known data

3. The attempt at a solution

When I do the integral of this function I'm unsure of what the limits are. Anyone care to help? Thanks

2. Dec 6, 2011

micromass

Please include an attempt or this thread will be deleted.

3. Dec 6, 2011

Studious_stud

Sure thing, just forgot to include it.

I'd use latex but it's just quicker this way...

4. Dec 6, 2011

micromass

Well f(x)=0 for $x\leq 0$, so the part of the integral from $-\infty$ to 0 vanishes, right??

So that would leave us with?

5. Dec 6, 2011

Studious_stud

Oh I get ya, so the lower limit is 0 and the upper limit is $-\infty$?

6. Dec 6, 2011

micromass

I guess you mean + for the upper limit, but yeah.

7. Dec 6, 2011

Studious_stud

Sorry for the double post here, I mean the upper limit is $\infty$