|x| -1 --- + ---*sign(x) 2 x x
/ sign(x) |x|\ 2*|-DiracDelta(x) + ------- - ---| | x 2| \ x / ---------------------------------- x
/ 3*sign(x) 3*DiracDelta(x) 3*|x|\ 2*|-DiracDelta(x, 1) - --------- + --------------- + -----| | 2 x 3 | \ x x / ----------------------------------------------------------- x