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СµÜ×ö±ÏÉ裬ÔõÄε±³õmatlabûѧºÃ¡£¡£¡£ ÇóÈý¸ö²ÎÊý ¸÷λ¿´¿´ÓÐʲôÎÊÌâ¡£¡£¡£ ×îºÃ°Ñ¸ÄºóµÄ³ÌÐò¸ú½á¹û·¢ÉÏÀ´£¬Íò·Ö¸Ðл >> clear clc data = [21.32 21.11 20.86 1 0.1 0.0498 0 267.31 297.19 ]'; x1 = data(:,1); x2 = data(:,2); y = data(:,3); X = [ones(size(x1)) x1.*x1 x1 x2.*x2 x2 x1.*x2]; [b,bint] = regress(y,X) scatter3(x1,x2,y,'filled') hold on x1fit = min(x1):0.5:max(x1); x2fit = min(x2):0.5:max(x2); [X1FIT,X2FIT] = meshgrid(x1fit,x2fit); YFIT = b(1)+ b(2)*[X1FIT*exp(b(3)*X2FIT)]^(-1/2); mesh(X1FIT,X2FIT,YFIT) xlabel('x1') ylabel('x2') zlabel('Y') |
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- ×¢²á: 2014-11-14
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