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