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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4. double f(double x){
  5. 	return((x-1)*(x-1)*sin(x));
  6. }
  7. int main() {
  8. 	double a=-6,b=9,eps=0.000000001,c,d;
  9. 	while(b-a>eps){
  10. 		c=a+(b-a)/3.0;
  11.         d=b-(b-a)/3.0;
  12.         if(f(c)<f(d))b=d;
  13.         else a=c;
  14. 	}
  15. 	cout<<(a+b)/2;
  16. 	return 0;
  17. }
  18.  
  19.  
Success #stdin #stdout 0s 5284KB
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5.16049
https://ideone.com/jlDfNi
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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