-sin(x)*sign(sin(x)) - two *cos(x)^ two *DiracDelta(sin(x)) = zero
minus sinus of (x) multiply by sign( sinus of (x)) minus 2 multiply by co sinus of e of (x) squared multiply by DiracDelta( sinus of (x)) equally 0
minus sinus of (x) multiply by sign( sinus of (x)) minus two multiply by co sinus of e of (x) to the power of two multiply by DiracDelta( sinus of (x)) equally zero