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Quadratic Surfaces

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tanoyese's version from 2018-02-14 06:58

Section

Question Answer
Any two variables (the third undefined)Cylinder
(x2+y2+z2 = 4)Ellipsoid
(x2+y2-z2 = 5)Hyperboloid (1 Sheet - Open on opposite signed var)
(x2-y2-z2 = 5)Hyperboloid (2 Sheets - Open on opposite signed var)
(x2+y2-z2 = 0)Cone
x2+y2-z=0Elliptic Paraboloid (Opens on linear term +=up, -=down)
x2-y2-z=0Hyperbolic Paraboloid (Think of PRINGLES)
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