public static string ToStringWithIntegerPart(MyFrac f)
{
var intPart = f.nom / f.denom;
f.nom -= f.denom * intPart;
return($"({intPart.ToString()}+{f.ToString()})");
}
public static MyFrac GetRGR113LeftSum(int n)
{
MyFrac res = new MyFrac(1, 3);
for (int i = 2; i <= n; i++)
{
res = Plus(res, new MyFrac(1, (2 * i - 1) * (2 * i + 1)));
}
return(res);
}
public static MyFrac GetRGR115LeftSum(int n)
{
MyFrac res = new MyFrac(1, 1);
for (int i = 2; i <= n; i++)
{
res = Multiply(res, Minus(new MyFrac(1, 1), new MyFrac(1, i * i)));
}
return(res);
}
static void Main(string[] args)
{
MyFrac drib1 = new MyFrac(18, -8);
MyFrac drib2 = new MyFrac(4, 8);
int n = 5;
Console.WriteLine($"Дрiб1: " + drib1);
Console.WriteLine("Дрiб2: " + drib2);
Console.WriteLine("Цiла частина дробу = " + MyFrac.ToStringWithIntegerPart(drib1));
Console.WriteLine("Не цiла частина дробу = " + MyFrac.DoubleValue(drib1));
Console.WriteLine("Додавання = " + MyFrac.Plus(drib1, drib2));
Console.WriteLine("Вiднiмання = " + MyFrac.Minus(drib1, drib2));
Console.WriteLine("Множення = " + MyFrac.Multiply(drib1, drib2));
Console.WriteLine("GetRGR113LeftSum (5)" + MyFrac.GetRGR113LeftSum(n));
Console.ReadKey();
}
public static MyFrac Divide(MyFrac f1, MyFrac f2)
{
return(new MyFrac(f1.nom * f2.denom, f1.denom * f2.nom));
}
public static MyFrac Multiply(MyFrac f1, MyFrac f2)
{
return(new MyFrac(f1.nom * f2.nom, f1.denom * f2.denom));
}
public static MyFrac Minus(MyFrac f1, MyFrac f2)
{
return(new MyFrac(f1.nom * f2.denom - f1.denom * f2.nom, f1.denom * f2.denom));
}
public static double DoubleValue(MyFrac f)
{
return(f.nom / (double)f.denom);
}