The wall of a heat exchanger receives a variable heat flux as shown in the figure. The heat flux is q dot of second derivative= Gy+H . The wall temperature at x = 0 is T = Ay+B. Determine the expression for heat transfer rate to the wall over the area from y = 0 to y = L. Also determine the expression for entropy transfer rate accompanying the heat transfer rate over the area from y = 0 to y = L. Assume unit depth into page.