А. Solve for u : их — 3 иу х %3D Зи, и(2, у) 3D In(y) u = B. Find the critical points (x., yc) of the PDE system in (A); select one of the following possible answers: ONone O(0, 0) O(7, 0) O(-1,0)

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A:

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A:

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A: For this problem, I assumed that given function f1(x) is (x-6)2(x+8).

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A: This is very complicated & lengthy problem.So I can do it in Advanced Mathematics.