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posted by Elyse on Wednesday, May 15, 2013 at 1:33pm.
describe the surface and give traces : x = y^2 - 4z^2
It's a hyperbolic paraboloid for y=k, x = k^2-4z^2 for z=k, x = y^2-4k^2 both are parabolas for x=k, y^2-4z^2 = k^2 is a hyperbola
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