Let S be the surface parameterised by

(i) Find the equation of the plane tangent to S at r(u,v).

(ii) At what points is the tangent plane to S parallel to the x-y plane?

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- Mar 11th 2011, 05:51 AMmaximus101equation of plane tangent
Let S be the surface parameterised by

(i) Find the equation of the plane tangent to S at r(u,v).

(ii) At what points is the tangent plane to S parallel to the x-y plane? - Mar 11th 2011, 05:57 AMHallsofIvy