Consider the functions z = 7 e* In y, x = In (u cos v), and y = u sin v. ex əz dz (a) Express and as functions of u and v both by using the Chain Rule and by expressing z directly in terms of u and v before differentiating. ди dz (b) Evaluate and at (u,v) = 2, ди 818818 Əv əz Əv

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