(z - 1)*sinh(z) + cosh(z) 3*(z - 1)*cosh(z)
------------------------- - -----------------
3 4
(z + 1) (z + 1)
$$- \frac{3 \left(z - 1\right) \cosh{\left(z \right)}}{\left(z + 1\right)^{4}} + \frac{\left(z - 1\right) \sinh{\left(z \right)} + \cosh{\left(z \right)}}{\left(z + 1\right)^{3}}$$
6*((-1 + z)*sinh(z) + cosh(z)) 12*(-1 + z)*cosh(z)
2*sinh(z) + (-1 + z)*cosh(z) - ------------------------------ + -------------------
1 + z 2
(1 + z)
-----------------------------------------------------------------------------------
3
(1 + z)
$$\frac{\left(z - 1\right) \cosh{\left(z \right)} + \frac{12 \left(z - 1\right) \cosh{\left(z \right)}}{\left(z + 1\right)^{2}} + 2 \sinh{\left(z \right)} - \frac{6 \left(\left(z - 1\right) \sinh{\left(z \right)} + \cosh{\left(z \right)}\right)}{z + 1}}{\left(z + 1\right)^{3}}$$
9*(2*sinh(z) + (-1 + z)*cosh(z)) 36*((-1 + z)*sinh(z) + cosh(z)) 60*(-1 + z)*cosh(z)
3*cosh(z) + (-1 + z)*sinh(z) - -------------------------------- + ------------------------------- - -------------------
1 + z 2 3
(1 + z) (1 + z)
-----------------------------------------------------------------------------------------------------------------------
3
(1 + z)
$$\frac{\left(z - 1\right) \sinh{\left(z \right)} - \frac{60 \left(z - 1\right) \cosh{\left(z \right)}}{\left(z + 1\right)^{3}} + 3 \cosh{\left(z \right)} - \frac{9 \left(\left(z - 1\right) \cosh{\left(z \right)} + 2 \sinh{\left(z \right)}\right)}{z + 1} + \frac{36 \left(\left(z - 1\right) \sinh{\left(z \right)} + \cosh{\left(z \right)}\right)}{\left(z + 1\right)^{2}}}{\left(z + 1\right)^{3}}$$