/** partial derivative of from-side active power with respect to from-side voltage magnitude */
public float getdFPdFVm() {
return _list.getdFPdFVm(_ndx);
}
/** partial derivative of from-side active power with respect to from-side voltage magnitude */
public float getdFPdFVm() {
return _list.getdFPdFVm(_ndx);
}