Производная tanh(2*x)

Вы ввели

tanh(2*x)

$$\tanh{\left (2 x \right )}$$

Первая производная

          2     
2 - 2*tanh (2*x)

$$- 2 \tanh^{2}{\left (2 x \right )} + 2$$

Вторая производная

  /         2     \          
8*\-1 + tanh (2*x)/*tanh(2*x)

$$8 \left(\tanh^{2}{\left (2 x \right )} - 1\right) \tanh{\left (2 x \right )}$$

Третья производная

    /         2     \ /           2     \
-16*\-1 + tanh (2*x)/*\-1 + 3*tanh (2*x)/

$$- 16 \left(\tanh^{2}{\left (2 x \right )} - 1\right) \left(3 \tanh^{2}{\left (2 x \right )} - 1\right)$$