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#include<stdio.h> #include <math.h> #define PI 3.14159 double b1,K; double integral(double(*fun)(double x),double a,double b,int n) { double s,h,z; int i; s=(fun(a)+fun(b))/2; h=(b-a)/n; /*»ý·Ö²½³¤*/ for(i=1;i<n;i++) s=s+fun(a+i*h); z=s*h; return z;/*·µ»Ø»ý·ÖÖµ*/ } double f(double x) { return((K-b1*(pow(K,2)-pow(x,2))/2)/sqrt(pow(x,2)-pow((K-b1*(pow(K,2)-pow(x,2))/2),2))); /*Ð޸Ĵ˴¦¿ÉÒԸı䱻»ýº¯Êý*/ } main() { double y,y1,L,K,jd; printf("Çë·Ö±ðÊäÈëLºÍKµÄÖµ:\n" ;scanf("%1f %1f",&L,&K); b1=4/(2*K+1); while(fabs(y1)>0.01) { b1=b1+0.001; y=integral(f,0.5,K,10000);/*Ð޸Ĵ˴¦¿ÉÒԸıä»ý·ÖÉÏÏÂÏ޺Ͳ½³¤*/ y1=L-2*y; jd=acos(K*(2-b1*K)+b1/4)*180/PI; } printf("b1=%f\n y=%lf\n y1=%lf\n jd=%lf\n",b1,y,y1,jd); } ¿´ÍøÉÏÓÐÈË˵ÊÇ·Ç·¨ÔËËãÒç³öʲôµÄ£¬µ«ÊÇÎÒ°Ñb1µÄ³õÖµÔÙ¼ÓÉÏ0.001¾ÍûÓÐΪ0µÄÇé¿öÁË£¬½á¹û»¹ÊdzöÏÖÄÇÖÖÇé¿ö£¬Çó¸ßÊÖÖ¸µã |
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