Equation Icon  ∫ 2P A = 1{2Q (tQt )e − 2(tPt )}d 𝜃 (25 ) ∫ S B = e2P(tQt)d𝜃 (26 ) ∫ S1 2P 2 C = {(tQt )(1 − e Q ) + 2Q (tPt)}d𝜃. (27 ) S1