Question

1)Use spherical coordinates to calculate the triple integral of f(x,y,z) over the given region D
a.f(x,y,z)=y ,D: x^(2)+y^(2)+z^(2)<=1,x,y,z<=0
b.F(x,y,z)=(x^(2)+y^(2)+z^(2))^(-3/2),D:2<=x^(2)+y^(2)+z^(2)<=4
2)Find a potential function for (yz^(2),xz^(2),2xyz)