Hi

I am trying to solve the following integral, but I am having trouble finding the limits. And first of all sorry for my bad LaTeX.

$\displaystyle \int{\int{\int{x^2+y^2}}}dV$ over E.

E is given by $\displaystyle z=x^2+y^2-1$ and $\displaystyle 0<=z<=8$

My Problem is the lower bound $\displaystyle z=0$. If it was $\displaystyle z=-1$ I would just use polar coordinates $\displaystyle 0<=\theta <=2*Pi$,$\displaystyle 0<=r<=2*\sqrt(2)$ and $\displaystyle -1<=z<=8$.

Thanks in advance

Jesper