Equation Icon  ˆasqz= ˆa (coshρt + cos2 ϕsinh ρt) + ˆa sin 2ϕ sinh ρt, c c s ˆassqz= ˆac sin 2ϕ sinh ρt + ˆas(cosh ρt − cos2ϕ sinh ρt), (73 )