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chris_usyd
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Homework Statement
a elliptic paraboloid is x^2/a^2+y^2/b^2<=(h-z)/h, 0<=z<=h, show that the horizontal cross-section at height z, is an ellipse
Homework Equations
The Attempt at a Solution
i don't know how to prove this, i only know that the standard ellipse is x^2/a^2+y^2/b^2=1..
could someone help me?