So I've seen quite a variety of notations that deviate from what we've learned in our "normal" math courses.
In math classes we write a volume integral as:
\iiint_W \rho\, d V
but somehow once we start doing E&M and QM, professors often just drop the extra integral signs:
\int_W \rho\, d V...
@snipez90:
Yes I've learned substitution. If it's solvable by substitution, then I just have the problem of finding what to substitute.
@HallsofIvy:
Ooh, that is one clever substitution. I never thought of that. What I don't get is why you are trying to find:
when there's a sin(x) in...
Well, so I really want to integrate what's shown in the title:
i.e.
\int \frac{dx}{(x^2+y^2)^\frac{3}{2}}
Now, I know there are quite a few straightforward answers to this. But what I really want is how people who do math got this formula in the first place. I don't just want a formula that...