Here's the question you clicked on:
math_proof
center of mass of the upper half(y>0 of the disk bounded by the circle x^2+y^2=4 with p(x,y)=1+y/2
|dw:1352957998418:dw|
is it asking for the quarter circle or of the half circle
\[\int\limits_{-2}^{2}\int\limits_{0}^{2+x}(1+\frac{ y }{2 })pdydx\]