Figures 15.1, 15.2, and 15.3 are based on Eqs. (A) and (F) of Ex. 15.3 with CE assumed to be positive and given by CEIR = 3x1x2. Graph the corresponding figures for the following cases, in which is assumed to be negative: 975 - 18.4 + 3 InT (a) A= T (b) A = 540 - 17.1 + 3 InT T (c) A= 1500 T 19.9 + 3 InT