Consider the functions z= -3ex In y, x= In (u cos v), and y = u sin v. əz əz (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 av dz (b) Evaluate and au dz dv at (u,v)= 8,-

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Q: Let Compute θω Əs δώ Ət -(-3,-4) -(-3,-4) = w = -5xy + 4yz - xz, x = st, y = est, z = t²

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