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 3206, 2/161 ȸ¿ø°¡ÀÔ  ·Î±×ÀΠ 
   kooing84
   c¾ð¾î·Î Á¤ÀûºÐ ±¸Çϴ°ǵ¥ Á» ºÁÁÖ¼¼¿ä ¤Ð¤Ð

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_programming&no=6330 [º¹»ç]


±¸°£ [a,b]¿¡¼­ ¿¬¼ÓÀÎ ÇÔ¼ö f(x)=x©÷(f(x)¡Ã0)¿¡ ´ëÇØ x=a,  x=b,  y=f(x)·Î µÑ·¯½ÎÀÎ ³ÐÀÌ(Á¤ÀûºÐ)´Â ´ÙÀ½°ú °°ÀÌ Á¤ÀǵȴÙ. ±¸ºÐ±¸Àû¹ýÀ» ÀÌ¿ëÇÏ¿© f(x)ÀÇ Á¤ÀûºÐ °ªÀ» °è»êÇϽÿÀ.
S(x)=ÀÎÅױ׶ö a¿¡¼­ b±îÁö x©÷dx ±¸Çϴ°Űŵç¿ä?



½ÇÇà°á°ú°ªÀº
ÀûºÐ±¸°£ ½ÃÀÛÀº? 1
ÀûºÐ±¸°£ ³¡Àº? 3
n(ÀûºÐ ±¸°£ÀÇ °³¼ö)Àº? 10000

f(x)=x©÷ÀÇ [1.0 , 3.0] ±¸°£ÀÇ ÀûºÐ ±Ù»çÄ¡´Â 8.668ÀÔ´Ï´Ù.




#include <stdio.h>

int main()
{

        int n;
        double a, b, dx, f_x, integral, area, i ,x;


        printf("ÀûºÐ ±¸°£ ½ÃÀÛÀº? ");
        scanf("%lf", &a);
        printf("ÀûºÐ ±¸°£ ³¡Àº? ");
        scanf("%lf", &b);
        printf("ÀûºÐ ±¸°£ÀÇ µîºÐ ¼ö´Â? ");
        scanf("%lf", &n);

        dx=(b-a)/n;

        integral=0;
        
        

        for (i=1;i<=n;i++)
        {
                
                x=a+(i-1)*dx;
                f_x=x*x*(f_x>=0);
                area=dx=f_x;
                

        }

        printf("f_x=x©÷ÀÇ [%.1lf, %.1lf] ±¸°£ÀÇ ÀûºÐ ±Ù»çÄ¡´Â %.3lfÀÔ´Ï´Ù.", a, b, integral);

        return 0;

}




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  Hit : 10803     Date : 2013/04/10 02:34



    
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