// 3 \ \
||/ x - I*pi\ 3*x| / 3*x\ 2 / 3*x\ | / 3*x\
|\\e / - 3*x*e /*cosh(x) + x*\-e /*sinh(x) 6*x *\-e /*cosh(x)| x*\-e /*cosh(x)
- x*|----------------------------------------------------- - --------------------| - -----------------
| 3 4 | 3
| / 2 2\ / 2 2\ | / 2 2\
\ \x + pi / \x + pi / / \x + pi /
$$- x \left(- \frac{6 x^{2} \left(- e^{3 x}\right) \cosh{\left(x \right)}}{\left(x^{2} + \pi^{2}\right)^{4}} + \frac{x \left(- e^{3 x}\right) \sinh{\left(x \right)} + \left(- 3 x e^{3 x} + \left(e^{x - i \pi}\right)^{3}\right) \cosh{\left(x \right)}}{\left(x^{2} + \pi^{2}\right)^{3}}\right) - \frac{x \left(- e^{3 x}\right) \cosh{\left(x \right)}}{\left(x^{2} + \pi^{2}\right)^{3}}$$
/ / / 2 \ \ \
| | | 8*x | | |
| | 6*x*|-1 + --------|*cosh(x)| |
| | | 2 2| | 2 |
| | 12*x*(x*sinh(x) + (1 + 3*x)*cosh(x)) \ pi + x / | 12*x *cosh(x)| 3*x
|x*|x*cosh(x) + 2*(1 + 3*x)*sinh(x) + 3*(2 + 3*x)*cosh(x) - ------------------------------------ + ---------------------------| + 2*x*sinh(x) + 2*(1 + 3*x)*cosh(x) - -------------|*e
| | 2 2 2 2 | 2 2 |
\ \ pi + x pi + x / pi + x /
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
3
/ 2 2\
\pi + x /
$$\frac{\left(- \frac{12 x^{2} \cosh{\left(x \right)}}{x^{2} + \pi^{2}} + x \left(x \cosh{\left(x \right)} - \frac{12 x \left(x \sinh{\left(x \right)} + \left(3 x + 1\right) \cosh{\left(x \right)}\right)}{x^{2} + \pi^{2}} + \frac{6 x \left(\frac{8 x^{2}}{x^{2} + \pi^{2}} - 1\right) \cosh{\left(x \right)}}{x^{2} + \pi^{2}} + 2 \left(3 x + 1\right) \sinh{\left(x \right)} + 3 \left(3 x + 2\right) \cosh{\left(x \right)}\right) + 2 x \sinh{\left(x \right)} + 2 \left(3 x + 1\right) \cosh{\left(x \right)}\right) e^{3 x}}{\left(x^{2} + \pi^{2}\right)^{3}}$$
/ / / 2 \ / 2 \ \ / 2 \ \
| | | 8*x | 2 | 10*x | | | 8*x | |
| | 18*|-1 + --------|*(x*sinh(x) + (1 + 3*x)*cosh(x)) 48*x *|-3 + --------|*cosh(x)| 18*x*|-1 + --------|*cosh(x)|
| | | 2 2| | 2 2| | | 2 2| |
| | 18*x*(x*cosh(x) + 2*(1 + 3*x)*sinh(x) + 3*(2 + 3*x)*cosh(x)) \ pi + x / \ pi + x / | 36*x*(x*sinh(x) + (1 + 3*x)*cosh(x)) \ pi + x / | 3*x
|x*|x*sinh(x) + 3*(1 + 3*x)*cosh(x) + 9*(2 + 3*x)*sinh(x) + 27*(1 + x)*cosh(x) - ------------------------------------------------------------ + -------------------------------------------------- - -----------------------------| + 3*x*cosh(x) + 6*(1 + 3*x)*sinh(x) + 9*(2 + 3*x)*cosh(x) - ------------------------------------ + ----------------------------|*e
| | 2 2 2 2 2 | 2 2 2 2 |
| | pi + x pi + x / 2 2\ | pi + x pi + x |
\ \ \pi + x / / /
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
3
/ 2 2\
\pi + x /
$$\frac{\left(x \left(- \frac{48 x^{2} \left(\frac{10 x^{2}}{x^{2} + \pi^{2}} - 3\right) \cosh{\left(x \right)}}{\left(x^{2} + \pi^{2}\right)^{2}} + x \sinh{\left(x \right)} - \frac{18 x \left(x \cosh{\left(x \right)} + 2 \left(3 x + 1\right) \sinh{\left(x \right)} + 3 \left(3 x + 2\right) \cosh{\left(x \right)}\right)}{x^{2} + \pi^{2}} + 27 \left(x + 1\right) \cosh{\left(x \right)} + 3 \left(3 x + 1\right) \cosh{\left(x \right)} + 9 \left(3 x + 2\right) \sinh{\left(x \right)} + \frac{18 \left(x \sinh{\left(x \right)} + \left(3 x + 1\right) \cosh{\left(x \right)}\right) \left(\frac{8 x^{2}}{x^{2} + \pi^{2}} - 1\right)}{x^{2} + \pi^{2}}\right) + 3 x \cosh{\left(x \right)} - \frac{36 x \left(x \sinh{\left(x \right)} + \left(3 x + 1\right) \cosh{\left(x \right)}\right)}{x^{2} + \pi^{2}} + \frac{18 x \left(\frac{8 x^{2}}{x^{2} + \pi^{2}} - 1\right) \cosh{\left(x \right)}}{x^{2} + \pi^{2}} + 6 \left(3 x + 1\right) \sinh{\left(x \right)} + 9 \left(3 x + 2\right) \cosh{\left(x \right)}\right) e^{3 x}}{\left(x^{2} + \pi^{2}\right)^{3}}$$