25 #ifndef MATHUTILS_MATHUTILS_NUMERICALDIFFERENTIATION_FINITEDIFFERENCE_H_
26 #define MATHUTILS_MATHUTILS_NUMERICALDIFFERENTIATION_FINITEDIFFERENCE_H_
48 double derivative(
const Function& f,
const double x);
double derivative2nd(const Function &f, const double x)
double derivative(const Function &f, const double x)