$$- \frac{\operatorname{sign}{\left(x \right)}}{x^{2}}$$
/ sign(x) \
-2*|- ------- + DiracDelta(x)|
\ x /
------------------------------
2
x
$$- \frac{2 \left(\delta\left(x\right) - \frac{\operatorname{sign}{\left(x \right)}}{x}\right)}{x^{2}}$$
/ 4*DiracDelta(x) 3*sign(x) \
-2*|- --------------- + --------- + DiracDelta(x, 1)|
| x 2 |
\ x /
-----------------------------------------------------
2
x
$$- \frac{2 \left(\delta^{\left( 1 \right)}\left( x \right) - \frac{4 \delta\left(x\right)}{x} + \frac{3 \operatorname{sign}{\left(x \right)}}{x^{2}}\right)}{x^{2}}$$