Gradients in 2D and 3D
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For a smooth surface in 3D, representing a function , the gradient at a point on is a vector in the direction of maximum change of . Also shown is the corresponding contour plot, which is the projection of onto the - plane. The red arrows on the surface and contour plots show the magnitude and direction of the gradient.
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Contributed by: Quentin Davis (November 2015)
Open content licensed under CC BY-NC-SA
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