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Âé·³°ïÎÒ¿´ÏÂÕâ¶Îmatlab³ÌÐòÄÄÀïÓÐÎó£¬ÊµÔÚÕÒ²»³ö t=[0,10,20,30,60,120,240,360,540,1080]'; y=[0,53.81,44.73,46.91,58.07,39.55,23.88,25.52,22.66,23.04]'; ft_ = fittype'('a1*exp(a2*t)+a3*exp(a4*t)+a5)',... 'dependent',{'y'},'independent',{'t'},... 'coefficients',{'a1', 'a2', 'a3','a4','a5'}); st=[8000 150000 0.2] [curve, goodness]= fit(t,y,ft_,'Startpoint',st) figure plot(curve,'predobs',0.95); hold on,plot(t,y,'b*') ¶àл¶àл |
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bjd1234
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Óîð©ÎÄ
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bjd1234
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feixiaolin
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