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