public ComplexNumber subtract(ComplexNumber c) { return(new ComplexNumber(_rn - c._rn, _in - c._in)); }
public static ComplexNumber subtract(ComplexNumber a, ComplexNumber b) { return(new ComplexNumber(a._rn - b._rn, a._in - b._in)); }
public ComplexNumber subtract(ComplexNumber c) { return(new ComplexNumber(_rn - c._rn, _in - c._in)); }
public static ComplexNumber subtract(ComplexNumber a, ComplexNumber b) { return(new ComplexNumber(a._rn - b._rn, a._in - b._in)); }