You are correct, good work.
You can always check your work here:
One more thing:
If you have
and you take two individual integrals like this:
will the answer be :
And, hopefully this would be true:
>.> I hope this makes sense because i always get in trouble when mods don't understand my stuff (all through my falt of course... but still)
and I tried wolffram, I could not get it to work.
(sry for dble posting ...)
double edit: general.... thanks, does that mean there is something wrong with the equation above?
Also, your integral of (dx)dx doesn't really make sense, we can't really make an integral like that. The other parts of it are okay though.
As for Wolfram not working, I suppose it is because of all the constants you have floating around...it works with ease when you just have one variable, but can be a pain otherwise.