2 2 z *sinh(z) + 2*z*cosh(z) z *(-2 - 2*z)*cosh(z) ------------------------ + --------------------- 2 4 (z + 1) (z + 1)
2 2 4*z*(2*cosh(z) + z*sinh(z)) 6*z *cosh(z) 2*cosh(z) + z *cosh(z) + 4*z*sinh(z) - --------------------------- + ------------ 1 + z 2 (1 + z) --------------------------------------------------------------------------------- 2 (1 + z)
/ 2 \ 2 2 6*\2*cosh(z) + z *cosh(z) + 4*z*sinh(z)/ 24*z *cosh(z) 18*z*(2*cosh(z) + z*sinh(z)) 6*sinh(z) + z *sinh(z) - ---------------------------------------- + 6*z*cosh(z) - ------------- + ---------------------------- 1 + z 3 2 (1 + z) (1 + z) ------------------------------------------------------------------------------------------------------------------------------ 2 (1 + z)