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ÄãÄǸöB(i,1)ÊÇɶ¶«Î÷£¿ÊDz»ÊÇÏë˵B(:,1)°¡£¿ ÄãµÄº¯ÊýÊDz»ÊÇÓ¦¸ÃÕâÑù°¡£¿ y(i)=a1*exp(-b1*x(i))+a2*exp(-b2*x(i))+a3*exp(-b3*x(i))+y(0) |
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5Â¥2011-01-11 22:46:51
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% zyj_main.m clear;clc; B=xlsread('CT.xls','sheet1'); xdata=B(:,2); ydata=B(:,3); a=[10,10,10]; b=[30,30,30]; y0=36; x=lsqcurvefit(@zyj_fun1,[a,b,y0],xdata,ydata); ----------------------------------------------------------------------- % zyj_fun1.m function zas=zyj_fun1(x,xdata) zas=x(1)*exp(-x(4)*xdata)+x(2)*exp(-x(5)*xdata)+x(3)*exp(-x(6)*xdata)+x(7)'; ---------------------------------------------------------------------- ½á¹ûËÆºõ»¹²»¶Ô£¬ÄãµÄÕâЩÊý¾Ý±¾Éí¾Í±È½Ï½Ó½üy=a*exp(-b*x)+cÐÎʽ |
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10Â¥2011-01-12 12:08:44
zyj8119
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xiegangmai(½ð±Ò+1):лл²ÎÓë 2011-01-13 08:26:54
xiegangmai(½ð±Ò+1):лл²ÎÓë 2011-01-13 08:26:54
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ÎÒÓÃÄãµÄ³ÌÐòÔõôÅܳöÕâÑùµÄ½á¹û£º Local minimum found. Optimization completed because the size of the gradient is less than the default value of the function tolerance. |
13Â¥2011-01-12 12:32:32
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2011-01-12 12:24
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2011-01-12 12:31
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2011-01-13 01:10
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