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candyzhang

гæ (³õÈëÎÄ̳)

[ÇóÖú] ÇóÖú×¼¶þ¼¶Îü¸½¶¯Á¦Ñ§matlab´úÂë

clc;
clear;
X=[10 20 30 40 50 60 80 100 120 150 180 210 270 330 390];
Y1=[5.74359 6.48718 7.53846 7.89744 7.94872 8.25641 8.46154 8.46154 8.66667 8.61538 8.76923 8.82051 9.4359 9.41026 9.35897];
Y2=[4.92308 5.17949 5.58974 6.46154 6.5641  6.51282 7.12821 7.48718 7.74359 8.87179 9.58974 10.25641 10.87179 10.66667 10.89744];
Y3=[6.97436 7.64103 8.51282 9.4359 9.53846 10.10256 10.82051 11.17949 11.79487 12.66667 12.97436 13.14103 13.28205 13.38462 13.17949];


%% function 2
myfun=inline('(x.*A(1)*A(2)^2)./(1+x.*A(1)*A(2))','A','x');
A=nlinfit(X,Y1,myfun,[-3 12.4]);
xx=X;
yy=(xx.*A(1)*A(2)^2)./(1+xx.*A(1)*A(2));
plot(X,Y1,'o',xx,yy,'r');
corrcoef(Y1,yy)
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