2 / 2 \ -1 + z + 2*z*(z - 3) (z - 3)*\z - 1/*sinh(z) --------------------- - ------------------------ cosh(z) 2 cosh (z)
/ 2 \ / 2 \ / 2\ | 2*sinh (z)| 2*\-1 + z + 2*z*(-3 + z)/*sinh(z) -6 + 6*z + \-1 + z /*|-1 + ----------|*(-3 + z) - ---------------------------------- | 2 | cosh(z) \ cosh (z) / ------------------------------------------------------------------------------------ cosh(z)
/ 2 \ / 2\ | 6*sinh (z)| \-1 + z /*|-5 + ----------|*(-3 + z)*sinh(z) / 2 \ | 2 | | 2*sinh (z)| / 2 \ 18*(-1 + z)*sinh(z) \ cosh (z) / 6 + 3*|-1 + ----------|*\-1 + z + 2*z*(-3 + z)/ - ------------------- - -------------------------------------------- | 2 | cosh(z) cosh(z) \ cosh (z) / --------------------------------------------------------------------------------------------------------------------- cosh(z)