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lm200944021

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[求助] 我想要模拟 x,y,z的关系,x和y是自变量,z是因变量,函数关系已知,只拟合常数

function liu
clear all; clc
x=[1.967545 2.956682 3.948605 4.942718 5.938462 7.938716 11.93423 19.94424];
y=[5.11341712 5.10398619 5.09562666 5.08833017 5.08208944 5.06912749 5.05724953 5.04336904];
z=[1.05595 1.259945 1.416935 1.555427 1.687987 1.876324 2.420285 3.444629];
beta0=[0.9 0.8 0.333]
[beta,resnorm,residual]=lsqcurvefit(@OBjFuc,[],[],[],x,y,z)
function f=OBjFuc(beta,x,y,z)
f=z-beta(1)*power(x,beta(2))*power(y,beta(3));



提示MATLAB Failure in initial user-supplied objective function evaluation. LSQCURVEFIT,请问怎么改,谢谢!
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