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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in=new Scanner(System.in);
  10. 		double a=in.nextDouble();
  11. 		double b=in.nextDouble();
  12. 		int n=in.nextInt();
  13. 		if((n<=0)||(a==b))System.out.println("Введенное 'n' не натуральное или введены два одинаковых числа\n");
  14. 		else
  15. 		if (a>b)System.out.println("Первое введеное число больше второго");
  16. 		else
  17. 		{
  18. 			double h=(b-a)/n;
  19. 			double f=0;				
  20. 			for(int i=1;i<=n;i++)
  21. 			{
  22. 				f+=(a+(i-0.5)*h)/(1+((a+(i-0.5)*h)*(a+(i-0.5)*h)));
  23. 			}
  24. 			System.out.println(f*h);
  25. 		}
  26. 	}
  27. }
Success #stdin #stdout 0.16s 321344KB
comments (?)
stdin
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47.421 57.421 5
stdout
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0.19125074572032633
https://ideone.com/s6Vp7e
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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