Solve the following cases studies in the presence of a discontinuous heat source: Consider an infinitely long plane slab with finite thickness 26 and thermal conductivity k. There is a planar heat source that generates heat at a rate of qs per unit area. This heat source is at the middle of the slab at x = 0. Both the left and right sides of the slab at x = a are at temperature Tw. Determine analytically the steady state temperature distribution through the entire slab and draw the temperature distribution.