4 Problem 16-4 4.1 a The heat capacity can be expressed in terms of the Debye function D(p/T) by noting that OD/T dx = d ex - 1)2 and integrating by parts. Show that Cv UD 3(BD/ T) = 4D 3NK T elD/T - 1 4.2 b Calculate and plot Cv/(3Nk) for T/OD = 0.2, 0.4, 0.6, 0.8, and 1.0. You can look up values of the Debye function in your textbook on page 302