public override Term GetDerivative(string argument)
{
List <Term> sums = new List <Term>();
for (int i = 0; i < Parameters.Length; i++)
{
Term r = Parameters[i];
if (r.IsMulInverse)
{
r = r.GetDerivative(argument) / (r ^ 2);
}
else
{
r = r.GetDerivative(argument);
}
for (int j = 0; j < Parameters.Length; j++)
{
if (i == j)
{
continue;
}
r *= Parameters[j];
}
sums.Add(r);
}
return(new Addition(sums.ToArray()));
}
public override Term GetDerivative(string argument)
{
Term f = Parameters[0];
Term g = Parameters[1];
return((f ^ (g - new Real(1))) * (g * f.GetDerivative(argument) + f * new Logarithm(f) * g.GetDerivative(argument)));
}
//[TODO] zusammenfassen/vereinfachen
public override Term Evaluate()
{
Term ret = Parameters[0];
int n = 1;
if (Parameters.Length == 3)
{
n = (int)((Real)Parameters[2]).Value;
}
for (int i = 0; i < n; i++)
{
ret = ret.GetDerivative(Parameters[1].ToString());
}
return(ret);
}
