Level Surfaces and Quadratic Surfaces
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For a function of three variables, , , and , the level surface of level is defined as the set of points in that are solutions of . A quadratic surface or quadric is a surface that is given by a second-order polynomial equation in the three variables , , and .
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Contributed by: Ana Moura Santos and João Pedro Pargana (Instituto Superior Técnico) (March 2011)
Open content licensed under CC BY-NC-SA
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