2 / 2 \ 2
1 2*tanh(x) 2*sin (x) x*\-1 + tanh (x)/ x*tanh (x)
------ - --------- + --------- + ----------------- - ----------
cos(x) sech(x) 3 sech(x) sech(x)
cos (x)
$$\frac{x \left(\tanh^{2}{\left(x \right)} - 1\right)}{\operatorname{sech}{\left(x \right)}} - \frac{x \tanh^{2}{\left(x \right)}}{\operatorname{sech}{\left(x \right)}} + \frac{2 \sin^{2}{\left(x \right)}}{\cos^{3}{\left(x \right)}} - \frac{2 \tanh{\left(x \right)}}{\operatorname{sech}{\left(x \right)}} + \frac{1}{\cos{\left(x \right)}}$$