public static double IntegralRect(Fxdx obj, double dx)
{
double ans = 0;
for (double st = obj.From; st <= obj.To; st += dx)
{
ans += obj.Fx(st);
}
ans *= dx;
return(ans);
}
public static double IntegralRect(Fxdx obj, int pieces)
{
return(IntegralRect(obj, ((-obj.From + obj.To) / pieces)));
}
public static double Integral(Fxdx obj, int pieces)
{
double dx = (-obj.From + obj.To) / pieces;
return(Integral(obj, dx));
}