Intuit // C# // Lecture_4 // Laba_#2, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            double Xn = -2, Xk = 8, dX = 1, t=2, y;
            Console.WriteLine("|__x__|__y__|");//заголовок таблицы
            for (double x = Xn; x <= Xk; x+=dX)
            {
                y=t;
                if (x>=0 && x<10) y = t*x;
                if (x>=10) y = 2*t;
                Console.WriteLine("|{0,5}|{1,5}|",x, y);
            }
            
            for (int i = 0; i<13; ++i) { Console.Write("="); }
            Console.WriteLine();
            
            //laba_#1
            Xn = -10; Xk = 10;
            double a = 0, z = 0;
            Console.WriteLine("\nLaba_#1");
            Console.WriteLine("|__x__|__________z_________|");
            for (double x = Xn; x<=Xk; x+=dX)
            {
                z = 2*Math.Pow(Math.Sin(3*Math.PI - 2*x),2)*Math.Pow(Math.Cos(5*Math.PI + 2*x),2);
                Console.WriteLine("|{0,5}|{1,20}|",x,z);
            }
            
            //Laba_№2
            Xn = -10; Xk = 10;
            a = 10;
            z = 0;
            Console.WriteLine("\nLaba_#2");
            Console.WriteLine("|__x__|________y________|");
            for(double x = Xn; x <= Xk; x+=dX)
            {
                z = x/14-(Math.Sin(5/2*Math.PI - 8*a))/4;
                Console.WriteLine("|{0,5}|{1,5}|",x,z);
            }
            
            
        }
    }
}

Show compiler warnings [ - ] Show input
Compilation time: 0,12 sec, absolute running time: 0,09 sec, cpu time: 0,09 sec, average memory usage: 14 Mb, average nr of threads: 3