/1\
/ 3 2\ z*sinh|-|
| z 3*z | /1\ \z/
|- -------- + -----|*cosh|-| - ---------
| 2 1 + z| \z/ 1 + z
\ (1 + z) /
$$- \frac{z \sinh{\left(\frac{1}{z} \right)}}{z + 1} + \left(- \frac{z^{3}}{\left(z + 1\right)^{2}} + \frac{3 z^{2}}{z + 1}\right) \cosh{\left(\frac{1}{z} \right)}$$
/1\
cosh|-| / 2 \
/1\ \z/ / z \ /1\ | z 3*z | /1\
2*sinh|-| + ------- + 2*|-3 + -----|*sinh|-| + 2*z*|3 + -------- - -----|*cosh|-|
\z/ z \ 1 + z/ \z/ | 2 1 + z| \z/
\ (1 + z) /
---------------------------------------------------------------------------------
1 + z
$$\frac{2 z \left(\frac{z^{2}}{\left(z + 1\right)^{2}} - \frac{3 z}{z + 1} + 3\right) \cosh{\left(\frac{1}{z} \right)} + 2 \left(\frac{z}{z + 1} - 3\right) \sinh{\left(\frac{1}{z} \right)} + 2 \sinh{\left(\frac{1}{z} \right)} + \frac{\cosh{\left(\frac{1}{z} \right)}}{z}}{z + 1}$$
/ /1\ /1\ \
| sinh|-| 6*cosh|-| / /1\\ / 2 \ |
| /1\ \z/ \z/ | cosh|-|| | z 3*z | /1\|
|6*sinh|-| + ------- + --------- / z \ | /1\ \z/| 6*|3 + -------- - -----|*sinh|-||
| \z/ 2 z / 3 2 \ 3*|-3 + -----|*|2*sinh|-| + -------| | 2 1 + z| \z/|
| z | z 3*z 3*z | /1\ \ 1 + z/ \ \z/ z / \ (1 + z) / |
-|------------------------------- + 6*|-1 + -------- - -------- + -----|*cosh|-| + ------------------------------------ + --------------------------------|
| z | 3 2 1 + z| \z/ z z |
\ \ (1 + z) (1 + z) / /
------------------------------------------------------------------------------------------------------------------------------------------------------------
1 + z
$$- \frac{6 \left(\frac{z^{3}}{\left(z + 1\right)^{3}} - \frac{3 z^{2}}{\left(z + 1\right)^{2}} + \frac{3 z}{z + 1} - 1\right) \cosh{\left(\frac{1}{z} \right)} + \frac{3 \left(\frac{z}{z + 1} - 3\right) \left(2 \sinh{\left(\frac{1}{z} \right)} + \frac{\cosh{\left(\frac{1}{z} \right)}}{z}\right)}{z} + \frac{6 \left(\frac{z^{2}}{\left(z + 1\right)^{2}} - \frac{3 z}{z + 1} + 3\right) \sinh{\left(\frac{1}{z} \right)}}{z} + \frac{6 \sinh{\left(\frac{1}{z} \right)} + \frac{6 \cosh{\left(\frac{1}{z} \right)}}{z} + \frac{\sinh{\left(\frac{1}{z} \right)}}{z^{2}}}{z}}{z + 1}$$