$$- \tanh{\left(x \right)} \operatorname{sech}{\left(x \right)}$$
/ 2 \
\-1 + 2*tanh (x)/*sech(x)
$$\left(2 \tanh^{2}{\left(x \right)} - 1\right) \operatorname{sech}{\left(x \right)}$$
/ 2 \
-\-5 + 6*tanh (x)/*sech(x)*tanh(x)
$$- \left(6 \tanh^{2}{\left(x \right)} - 5\right) \tanh{\left(x \right)} \operatorname{sech}{\left(x \right)}$$