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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. double f(double x)
  6. {
  7.         return 0.25 * (1.0 - 2.0 * x * x * x);
  8. }
  9.  
  10. int main()
  11. {
  12.         double x = 0.11;
  13.         double e = 0.00000005;
  14.         while(abs(x - f(x)) > e)
  15.         	x = f(x);
  16.         cout << 2.0 * x * x * x + 4.0 * x - 1.0 << endl;
  17. }
Success #stdin #stdout 0s 3096KB
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Standard input is empty
stdout
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-1.56921e-07
https://ideone.com/s5xA1l
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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