2
-1 + tanh (x)
-------------
2
tanh (x)
$$\frac{\tanh^{2}{\left (x \right )} - 1}{\tanh^{2}{\left (x \right )}}$$
/ 2 \
/ 2 \ | -1 + tanh (x)|
2*\-1 + tanh (x)/*|-1 + -------------|
| 2 |
\ tanh (x) /
--------------------------------------
tanh(x)
$$\frac{2}{\tanh{\left (x \right )}} \left(\frac{\tanh^{2}{\left (x \right )} - 1}{\tanh^{2}{\left (x \right )}} - 1\right) \left(\tanh^{2}{\left (x \right )} - 1\right)$$
/ 2 3\
| / 2 \ / 2 \ |
| 2 5*\-1 + tanh (x)/ 3*\-1 + tanh (x)/ |
2*|-2 + 2*tanh (x) - ------------------ + ------------------|
| 2 4 |
\ tanh (x) tanh (x) /
$$2 \left(\frac{3 \left(\tanh^{2}{\left (x \right )} - 1\right)^{3}}{\tanh^{4}{\left (x \right )}} - \frac{5 \left(\tanh^{2}{\left (x \right )} - 1\right)^{2}}{\tanh^{2}{\left (x \right )}} + 2 \tanh^{2}{\left (x \right )} - 2\right)$$