3 2
/ 2 \ / 2 \
\z + 1/ *cosh(z) + 6*z*\z + 1/ *sinh(z)
$$6 z \left(z^{2} + 1\right)^{2} \sinh{\left(z \right)} + \left(z^{2} + 1\right)^{3} \cosh{\left(z \right)}$$
/ 2 \
/ 2\ |/ 2\ / 2\ / 2\ |
\1 + z /*\\1 + z / *sinh(z) + 6*\1 + 5*z /*sinh(z) + 12*z*\1 + z /*cosh(z)/
$$\left(z^{2} + 1\right) \left(12 z \left(z^{2} + 1\right) \cosh{\left(z \right)} + \left(z^{2} + 1\right)^{2} \sinh{\left(z \right)} + 6 \left(5 z^{2} + 1\right) \sinh{\left(z \right)}\right)$$
3 2
/ 2\ / 2\ / 2\ / 2\ / 2\
\1 + z / *cosh(z) + 18*z*\1 + z / *sinh(z) + 18*\1 + z /*\1 + 5*z /*cosh(z) + 24*z*\3 + 5*z /*sinh(z)
$$18 z \left(z^{2} + 1\right)^{2} \sinh{\left(z \right)} + 24 z \left(5 z^{2} + 3\right) \sinh{\left(z \right)} + \left(z^{2} + 1\right)^{3} \cosh{\left(z \right)} + 18 \left(z^{2} + 1\right) \left(5 z^{2} + 1\right) \cosh{\left(z \right)}$$