double func(double x)
{
var res = (x - 5 * Math.Pow(Math.Sin(x), 2));
EventSpline?.Invoke(x, res);
return((double)res);
}
double func(double x)
{
var res = ((Math.Pow(Math.E, (double)x)) / (Math.Pow((double)x, 3) - Math.Pow(Math.Sin((double)x), 3)));
EventSpline?.Invoke(x, res);
return((double)res);
}