Consider the 2-D rectangular region 0x a, 0 y b, which is ini- tially at temperature F(x, y). For t > 0, internal energy is generated at a constant rate go (W/m) and the region is subjected to the follow- 0 are maintained at a ing boundary conditions: The boundaries at x prescribed temperature f(y), the boundary at x =a is subjected to a prescribed heat flux q"(y) out of the solid, the boundary at y = 0 is main- tained at constant temperature T, and the boundary at y b dissipates heat by convection into a medium with fluid temperature To and with a heat transfer coefficient h. Formulate the problem using superposition for solution of T(x, y, t), such that each subproblem is in a solvable form. Formulation includes the simplified PDE or ODE and the corresponding boundary and/or initial conditions. Do not shift the temperature scale for any problems, and do not actually solve any of the subproblems, only formulate. - =