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Consider an insulator which has a shape of solid circle. Assume that the temperature of the boundary at the top (bottom) half circle is fixed to be a constant u₁ (u₂). Given that the heat equation in the polar coordinate (p, ) is du J²u 1 du 1 ди + + = др2 рарраф2 Ət Find the STEADY temperature u at any point inside the in-sulator