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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. double f(double x){ return -7*x*x - 4*x;} 
  5. int main() {
  6. double x1 = -0.57143,  sum = 0, dx = 0.01;
  7. 	while(x1 <= 0) {
  8. x1 += dx; 
  9. sum += f(x1)*dx;
  10. } 
  11. cout << sum;
  12. 	return 0;
  13. }
Success #stdin #stdout 0.01s 5288KB
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Standard input is empty
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0.217297
https://ideone.com/wwB9E9
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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