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Tangent Planes and Graphing Functions

Consider the function f (x, y) = x^2 ln( y^2 )
(a) Find the equation of the tangent plane to the surface of f (x, y) at the point (3,1/ e) .
(b) Show the tangent plane to the surface at the point (3,1/ e) by plotting both on the same graph.
Select a suitable viewpoint for your graph so that you can see where the plane is tangential.

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Tangent Planes and Graphing Functions are investigated.

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