According to Stefan's Law of Radiation (previously examined in Sec. 1.3, Problem 55 and Sec. 1.4, Problem 11) the rate of change of the radiation energy of a body at absolute temperature T is given by dT /dt = k(M4 - T4), where k > 0 and M is the ambient or surrounding absolute temperature. Sketch typical solutions T = T(t) for various initial temperatures T0 = T(0).