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dbb627
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2Â¥2011-12-01 10:54:52
wtisunday
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function [c,err,yc]=bisect(f,a,b,delta) % fÊÇËùÒªÇó½âµÄº¯Êý % aºÍb·Ö±ðΪÓиùÇø¼äµÄ×óÓÒÏÞ % deltaÊÇÔÊÐíµÄÎó²î½ç % cΪËùÇó½üËÆÖµ % ycΪº¯ÊýfÔÚcÉϵĺ¯ÊýÖµ % errΪcµÄÎó²î¹À¼Æ if nargin<4 delta=1e-5; end ya=feval('f',a) yb=feval('f',b) if yb==0,c=b,return, end if ya*yb>0, disp('(a,b)²»ÊÇÓиùÇø¼ä'); return end max1=1+round((log(b-a)-log(delta))/log(2)); for k=1:max1 c=(a+b)/2; yc=feval('f',c); if yc==0 a=c;b=c;break, elseif yb*yc>0 b=c;yb=yc; else a=c;ya=yc; end if (b-a) k,c=(a+b)/2,err=abs(b-a),yc=feval('f',c) ÎÒÕâ¸öÄijö´íÁËÂð |
3Â¥2011-12-01 11:23:23
wtisunday
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4Â¥2011-12-01 11:38:23
Justin_yzg
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5Â¥2011-12-02 08:02:10













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