Tangent Planes to Quadratic Surfaces
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Four different quadratic functions are used to define surfaces. You can vary the point of tangency. The tangent plane is given by the first-order Taylor polynomial approximation .
Contributed by: Gerhard Schwaaband Chantal Lorbeer (March 2011)
Open content licensed under CC BY-NC-SA
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"Tangent Planes to Quadratic Surfaces"
http://demonstrations.wolfram.com/TangentPlanesToQuadraticSurfaces/
Wolfram Demonstrations Project
Published: March 7 2011