/src/main/java/net/finmath/montecarlo/automaticdifferentiation/forward/RandomVariableDifferentiableAD.java
if ( differentialIndex == 1) {   derivative = X.mult( Z) ; }else {   derivative = X.mult( Y) ; }
[Delete]
derivative = Y.div(Z.squared()).mult(-1.0); } break; case SUBRATIO: if(differentialIndex == 0) { derivative = one; <extra_id_0> derivative = Z.invert().mult(-1.0); } else { derivative = Y.div(Z.squared()); } break; case ACCRUE: