diff --git a/CourseApp/Program.cs b/CourseApp/Program.cs
deleted file mode 100644
index 7450310..0000000
--- a/CourseApp/Program.cs
+++ /dev/null
@@ -1,46 +0,0 @@
-using System;
-
-namespace CourseApp
-{
-    public class Program
-    {
-        public static double MyFunction(double a, double b, double x)
-        {
-            var y = (a * Math.Pow(x, 2)) + (b * x);
-            return y;
-        }
-
-        public static double[] TaskA(double a, double b, double xn, double xk, double dx)
-        {
-            return new double[0];
-        }
-
-        public static double[] TaskB(double a, double b, double[] x)
-        {
-            var y = new double[x.Length];
-            for (var i = 0; i < x.Length; i++)
-            {
-                y[i] = MyFunction(a, b, x[i]);
-            }
-
-            return y;
-        }
-
-        public static void Main(string[] args)
-        {
-            Console.WriteLine("Hello World!");
-            const double a = 2.2;
-            const double b = 3.8;
-            var resSingle = MyFunction(a, b, 4);
-            Console.WriteLine(resSingle);
-            var x = new double[] { 1, 2, 3, 4, 5 };
-            var taskBRes = TaskB(a, b, x);
-            foreach (var item in taskBRes)
-            {
-                Console.WriteLine($"y = {item}");
-            }
-
-            Console.ReadLine();
-        }
-    }
-}
diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..d7526ab
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,36 @@
+
+
+namespace Rextester
+{
+    public class Program
+    {
+        public static void Problem(double a, double b, double x_begin, double x_end, double x_delta)
+        {
+            double yA;
+            for (double x = x_begin; x < x_end; x = (x + x_delta))
+            {
+                yA = ((Math.Pow(a, x) - Math.Pow(b, x)) * (Math.Pow(a, (1 / 3)) * (Math.Pow(b, (1 / 3))))) /(Math.Log10(a/b));
+                Console.WriteLine(yA + " ");
+            }
+        }
+        public static void Arr(double a, double b)
+        {
+            double yB;
+            double[] arr = { 4.48, 3.56, 2.78, 5.28,3.21 };
+            for (int i = 0; i < 5; i++)
+            {
+                yB = ((Math.Pow(a, arr[i]) - Math.Pow(b, arr[i])) * (Math.Pow(a, (1 / 3)) * (Math.Pow(b, (1 / 3))))) / (Math.Log10(a / b));
+                Console.WriteLine(yB + " ");
+            }
+
+        }
+        public static void Main(string[] args)
+        {
+            Console.WriteLine("A ");
+            Rextester.Program.Problem(0.4, 0.8, 3.2, 6.2, 0.6);
+            Console.WriteLine("B ");
+            Rextester.Program.Arr(0.4, 0.8);
+
+        }
+    }
+}
diff --git a/README.md b/README.md
index 02c3f27..c101229 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,3 @@
-# Tprogramming_42_2019
\ No newline at end of file
+# Tprogramming_42_2019
+
+Elizaveta_Kalashnikova