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Solve the following psuedo (or degenerate) PDEs assuming u = u(x, y). (a) (b) (c) (d) Uz+u = 0 U-yu=0 Uz + xu =

Solve the following psuedo (or degenerate) PDEs assuming u = u(x, y). (a) (b) (c) (d) Uz+u = 0 U-yu=0 Uz + xu = 0 Uzz +U+U=0

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