public double MethodRectangle(BorderMethodRectangle border, double h)
{
double result = 0;
for (double i = a; i <= b; i += h)
{
result += GetFunctionValue(i) * h;
}
return(result);
}
static double MethodRectangle(BorderMethodRectangle border, string function, double a, double b, double h)
{
double result = 0;
for (double i = a; i <= b; i += h)
{
result += MathParse(function, i) * h;
}
return(result);
}