Posted by Elyse on .
describe the surface and give traces :
x = y^2  4z^2

Calculus 
Steve,
It's a hyperbolic paraboloid
for y=k, x = k^24z^2
for z=k, x = y^24k^2
both are parabolas
for x=k, y^24z^2 = k^2
is a hyperbola