The solution of Laplace's equation Urx + Uyry 0 < r < 3, 0 < y< 4, subject to the boundary conditions u(x, 0) = 3x – x², u(x, 4) = 0, u(0, y) = 0, u(3, y) = 0. has the form u(x, y) O within the rectangular region - NT(3–x) 2 sin() L an sinh n=1 O b) ∞ E an sinh () sin() NTY 3 п-1 c) None of these nT(4-y) sin (") NAX sinh n=1 Oe ax + By + yry+ d

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