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Unformatted text preview: , 2 , 0) to the cone dened by z 2 = x 2 + y 2 . 4. Find the maximum and minimum values of f ( x,y,z ) = 3 xy3 z on the curve that is the intersection of the surfaces dened by x + yz = 0 and x 2 + 2 y 2 = 1. 5. Suppose that z = f ( x,y ), x = s + t and y = st . Show that z 2 xz 2 y = z s z t . 6. Suppose that z is dened implicitly (as a function of x and y ) by z 33 xz + 3 xyz = 1. Find the partial derivatives z x and z y . When are they dened? 1...
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 Fall '11
 Loveys
 Calculus

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