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comn1024

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[ÇóÖú] Çó¸ßÊÖ£¬ÓÃmatlabÄâºÏSÇúÏߵķ½·¨

x1=[1800 1900 2100 2200 2300 2400 2500 2600 2650 2700 2720 2650 2600 2500 2300 2200 2000 1850 1820 1800 1750 1500 1000 900];
x2=[32 60 75 90 90 98 100 102 108 112 115 116 118 120 118 105 80 60 50 30 26 20 8 5];
y=x1.*x2;
y=k/(1+a*exp(b*x1)
Çóa b kÖµ
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Medichen

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2Â¥2012-08-26 10:26:39
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dingd

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comn1024: ½ð±Ò+1, ¡ï¡ï¡ïºÜÓаïÖú 2012-08-26 21:51:56
ÓÃ1stOptºÜ¼òµ¥°¡£º
CODE:
Constant
x1=[1800 1900 2100 2200 2300 2400 2500 2600 2650 2700 2720 2650 2600 2500 2300 2200 2000 1850 1820 1800 1750 1500 1000 900],
x2=[32 60 75 90 90 98 100 102 108 112 115 116 118 120 118 105 80 60 50 30 26 20 8 5];
MinFunction Sum(x1,x2)((x1*x2-k/(1+a*exp(b*x1)))^2);

k: 314762.348045923
a: 10353.4695497507
b: -0.00450155241252536
3Â¥2012-08-26 19:41:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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