$$- e^{- \left|{x}\right|} \operatorname{sign}{\left(x \right)}$$
/ 2 \ -|x|
\sign (x) - 2*DiracDelta(x)/*e
$$\left(\operatorname{sign}^{2}{\left(x \right)} - 2 \delta\left(x\right)\right) e^{- \left|{x}\right|}$$
/ 3 \ -|x|
\- sign (x) - 2*DiracDelta(x, 1) + 6*DiracDelta(x)*sign(x)/*e
$$\left(- \operatorname{sign}^{3}{\left(x \right)} + 6 \delta\left(x\right) \operatorname{sign}{\left(x \right)} - 2 \delta^{\left( 1 \right)}\left( x \right)\right) e^{- \left|{x}\right|}$$