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【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 一安: 金币+10, 博学EPI+1, ★★★★★最佳答案, 谢了 2015-09-22 09:02:38
Title "多方程拟合";
Parameters a1,b1,a2,b2,a3,d3,a4,b4,a5,b5,a6,b6;
Variables x,y1,y2,y3,y4,y5,y6;
SharedModel;
Function y1=a1/(a1-1+exp(a1*b1*(1/x-1/398.15)));
y2=a2/(a2-1+exp(a2*b2*(1/x-1/398.15)));
y3=a3/(a3-1+exp(a3*b3*(1/x-1/398.15)));
y4=a4/(a4-1+exp(a4*b4*(1/x-1/398.15)));
y5=a5/(a5-1+exp(a5*b5*(1/x-1/398.15)));
y6=a6/(a6-1+exp(a6*b6*(1/x-1/398.15)));
data;
//x y1 y2 y3 y4 y5 y6
298 0.03937 0.00728 ... ... ... ...
303 0.00826 0.05400 ... ... ... ...
308 0.01085 0.06354 ... ... ... ...
313 0.01718 0.07780 ... ... ... ...
318 0.02350 0.09858 ... ... ... ...
323 0.03390 0.11010 ... ... ... ...
328 0.04308 0.13530 ... ... ... ... |
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