Hello. I am having some trouble with the following problem and would be thankful if any of you could help me out.
Homework Statement
Let C be the hyperbola formed by intersecting the cone
x^2+y^2=z^2, z>0
with the plane x+y+z=1, and let
\textbf{f}(x,y,z)=<0,0,1/z^2>.
I am trying...