// Derivative rule
public override Function Derivative()
{
if (RightFunc is Constant)
{
return(RightFunc * (LeftFunc ^ (RightFunc - new Constant(1))) * LeftFunc.Derivative());
}
return((RightFunc.Derivative() * Funcs.Ln(LeftFunc) + LeftFunc.Derivative() * RightFunc / LeftFunc) * this);
}
// Derivative rule
public override Function Derivative()
{
return((LeftFunc.Derivative() * RightFunc - RightFunc.Derivative() * LeftFunc) / (RightFunc * RightFunc));
}
// Derivative rule
public override Function Derivative()
{
return(LeftFunc.Derivative() * RightFunc + LeftFunc * RightFunc.Derivative());
}