The first derivative
[src]
$$- \frac{1}{\sinh^{2}{\left(x \right)}}$$
The second derivative
[src]
2*cosh(x)
---------
3
sinh (x)
$$\frac{2 \cosh{\left(x \right)}}{\sinh^{3}{\left(x \right)}}$$
The third derivative
[src]
/ 2 \
| 3*cosh (x)|
2*|1 - ----------|
| 2 |
\ sinh (x) /
------------------
2
sinh (x)
$$\frac{2 \left(1 - \frac{3 \cosh^{2}{\left(x \right)}}{\sinh^{2}{\left(x \right)}}\right)}{\sinh^{2}{\left(x \right)}}$$