Dx² 3. Solve The Problem ди A2u 0 For 0 0, At Du (0, 1) = 0, Ax U(1, 1) = 0, U(x, 0) = X. Prove That The Solution Is Valid. HINT: Use Extension By Symmetry, And Scaling.

dx² 3. Solve the problem ди a2u 0 for 0 0, at du (0, 1) = 0, ax u(1, 1) = 0, u(x, 0) = x. Prove that the solution is valid. HINT: Use extension by symmetry, and scaling.