public FrequencyCutoffSolution(double cap, double res, double freq)
 {
     capacitor   = new ElectricalStuff.Capacitor(cap);
     resistor    = new ElectricalStuff.Resistor(res);
     sI          = SI.AutoDetermineUnit(freq);
     Capacitance = cap;
     Resistance  = res;
     Frequency   = freq;
 }
 static public double ClassSolve(ElectricalStuff.Capacitor Cap, ElectricalStuff.Resistor resistor)
 {
     throw new NotImplementedException();
 }