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Dec 7th, 2019
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  1. // ConsoleApplication 2.5.cpp: определяет точку входа для консольного приложения.
  2. //
  3. #include "stdafx.h"
  4. #include <iostream>
  5.  
  6. using namespace std;
  7.  
  8. void Iter(double x, double &sum, int n)
  9. {
  10. sum = 1;
  11. double pow = 1;
  12. for (int i = 1; i <= n; i++)
  13. {
  14. pow *= x;
  15. sum += (18 - 2 * i)*pow;
  16. }
  17. }
  18.  
  19. int main()
  20. {
  21. int n;
  22. double x0 = 0, xm = 3, dx = 0.25, sum, b, x;
  23.  
  24. cout << "enter ur n\n";
  25. cin >> n;
  26.  
  27. x = x0;
  28.  
  29. while (x < xm)
  30. {
  31. Iter(x, sum, n);
  32. x += dx;
  33. }
  34.  
  35. cout << "result = "<<sum<<"\n";
  36.  
  37. system("pause");
  38. return 0;
  39. }
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