Unformatted text preview: in your estimate. 2. Find a three dimensional unit vector that is normal to the graph of z = x 2y 2 + cos(sin( x )) at the point ( π, 1 , π 2 ). 3. Consider the level surface xyz = 6 at the point (1 , 2 , 3). (a) Find the equation for the tangent plane. (b) Find the parametric equation for the normal line. (c) Make a Maple plot showing the level surface, the tangent plane, and the normal line. Choose the domain and the viewpoint so that you get a good view of all three objects....
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 Spring '11
 Stephen

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