Баулин Егор БИВТ-25-11 синяя лига

Lab2/Blue.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Runtime.InteropServices;
 
@@ -12,7 +12,10 @@ public double Task1(int n, double x)
             double answer = 0;
 
             // code here
-
+            for(int i=1;i<=n;i++)
+            {
+                answer += Math.Sin(i * x) / Math.Pow(x, i - 1);
+            }
             // end
 
             return answer;
@@ -22,7 +25,20 @@ public double Task2(int n)
             double answer = 0;
 
             // code here
-
+            double factorial = 1;
+            double power = 1;
+
+            for (int i = 1; i <= n; i++)
+            {
+                factorial *= i;
+                power *= 5;
+                double term = power / factorial;
+
+                if (i % 2 == 0)
+                    answer += term;
+                else
+                    answer -= term;
+            }
             // end
 
             return answer;
@@ -32,7 +48,19 @@ public long Task3(int n)
             long answer = 0;
 
             // code here
-
+            if (n >= 1) answer += 0;
+            if (n >= 2) answer += 1;
+
+            long prev1 = 0;
+            long prev2 = 1;
+
+            for (int i = 3; i <= n; i++)
+            {
+                long current = prev1 + prev2;
+                answer += current;
+                prev1 = prev2;
+                prev2 = current;
+            }
             // end
 
             return answer;
@@ -41,17 +69,39 @@ public int Task4(int a, int h, int L)
         {
             int answer = 0;
 
-            // code here
-
-            // end
-
-            return answer;
+            // code here 
+            int n = 1;
+            while (true)
+            {
+                long Sn = (long)n * (2 * a + (n - 1) * h) / 2;
+                if (Sn > L)
+                {
+                    answer = n - 1;
+                    break;
+                }
+                n++;
+            }
+                // end
+
+                return answer;
         }
         public double Task5(double x)
         {
             double answer = 0;
 
             // code here
+            double ch = 0, zn = 1;
+            double elem = ch / zn;
+            int i = 1;
+
+            do
+            {
+                ch += i;
+                zn *= x;
+                answer += elem;
+                elem = ch / zn;
+                i++;
+            } while (elem > 0.0001);
 
             // end
 
@@ -62,7 +112,15 @@ public int Task6(int h, int S, int L)
             int answer = 0;
 
             // code here
-
+            int currentCells = S;
+            int time = 0;
+
+            while (currentCells < L)
+            {
+                time += h;
+                currentCells *= 2;
+            }
+            answer = time;
             // end
 
             return answer;
@@ -74,7 +132,36 @@ public int Task6(int h, int S, int L)
             int c = 0;
 
             // code here
-
+            double coef = 1 + I / 100.0;
+
+            // a) за 7 дней
+            double daily = S;
+            a = 0;
+            for (int day = 1; day <= 7; day++)
+            {
+                a += daily;
+                daily *= coef;
+            }
+
+            // b) суммарный путь 100 км
+            double total = 0;
+            daily = S;
+            b = 0;
+            while (total < 100)
+            {
+                b++;
+                total += daily;
+                daily *= coef;
+            }
+
+            // c) дневная норма > 42 км
+            daily = S;
+            c = 0;
+            while (daily <= 42)
+            {
+                c++;
+                daily *= coef;
+            }
             // end
 
             return (a, b, c);
@@ -85,10 +172,23 @@ public int Task6(int h, int S, int L)
             double SY = 0;
 
             // code here
-
+            for (double x = a; x <= b + 0.0001; x += h)
+            {
+                int i = 0;
+                double t = 1, sum = 1;
+                do
+                {
+                    i++;
+                    t = t * ((2 * i + 1) * x * x / (i * (2 * i - 1)));
+                    sum += t;
+                } while (t >= 0.0001);
+
+                SS += sum;
+                SY += (1 + 2 * x * x) * Math.Exp(x * x);
+            }
             // end
 
             return (SS, SY);
         }
     }
-}
+}

Lab2/White.cs

@@ -56,7 +56,6 @@ public int Task5(int L)
         public double Task6(double x)
         {
             double answer = 0;
-            const double R = 6371.0; // радиус Земли, км
 
             // code here
 
@@ -78,6 +77,7 @@ public int Task7(int n)
         public int Task8(double L, double v)
         {
             int answer = 0;
+            const double R = 6371.0; // радиус Земли, км
 
             // code here
 
@@ -86,4 +86,5 @@ public int Task8(double L, double v)
             return answer;
         }
     }
-}
+
+}