Question: 7. Check whether u(x, y) = sinh r cosh y and u(x, y) = x-3xy +6xy-2y are solutions to the Laplace equation Uzz +

7. Check whether u(x, y) = sinh r cosh y and u(x,

7. Check whether u(x, y) = sinh r cosh y and u(x, y) = x-3xy +6xy-2y are solutions to the Laplace equation Uzz + Uyy = 0.

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