Consider the functions z = 7e* In y, x= In (u cos v), and y = u sin v. dz əz (a) Express and ди of u and v before differentiating. az dz (b) Evaluate and ди əz Əx as functions of u and v both by using the Chain Rule and by expressing z directly in terms Əv əz Əv (10.7) dz (a) Find each partial derivative needed to use the Chain Rule to find du at (u,v)= 10, *** dx ди dy du

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