extrema property
Returns the parameter values that correspond with extrema on both the x and y axes.
Implementation
List<double> get extrema {
final roots = <double>[];
roots.addAll(extremaOnX);
roots.addAll(extremaOnY);
final rootsSet = Set<double>.from(roots);
final uniqueRoots = rootsSet.toList();
uniqueRoots.sort();
return uniqueRoots;
}