Question: Let (x, y) = x cos(y) and x = u 2 + v 2 and y = u v. af af (a) Calculate the

Let ƒ(x, y) = x cos(y) and x = u² + v²and y = u − v.

af af (a) Calculate the primary derivatives x' dy (b) Use the Chain Rule to calculate df/av. Leave the answer

af af (a) Calculate the primary derivatives x' dy (b) Use the Chain Rule to calculate df/av. Leave the answer in terms of both the dependent and the inde- pendent variables. (c) Determine (x, y) for (u, v) = (2, 1) and evaluate df/av at (u, v) = (2, 1).

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