Equation Icon  ′ 1∕η-−-1-+-(ln-Q-)′9- x2Q-−--3(ln-H-)′∕Q- 𝜃M-- Δ M = − x2 + 9Ω 2ΩM ΔM − x2 + 9Ω aH Q 2 M Q 2 M ′ 3- Q- 𝜃M = − 𝜃M − 2aH ΩM η ΔM , (1.3.24 )