# Tripple integral

1. Oct 2, 2007

### kthouz

can someone help me in graphing the following function: x^2+y^2+z^2=z.
i actually know about x^2+y^2+z^2=k (k=constant) but there above the radius z still changing. the qustion was to intagrate that function and i want to use the spherical coordinates then i will need to know the range of the radius.

2. Oct 2, 2007

### AiRAVATA

Why dont you complete squares?

Hint: $(z-z/2)^2=z^2-z+1/4$