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[求助] 使用1stOpt拟合代码如何,不能进行拟合是什么情况,恳请大家解答一下 已有1人参与

使用1stOpt拟合代码如何,不能进行拟合是什么情况,恳请大家解答一下
/Parameters x1,x2,x3,x4,x5,x6,x7,x8,z1,z2,z3,z4,z5;
//Variable z1,z2,z3,z4,z5,y;
//Function y =(1-(x1*((z1/z2).^x2)*exp(x3*z3/z4))/((225.^x4)z5.^x5))/(1-(x6*exp(x7*z3/z4))/(z5.^x8));
Data;
0.697 2.289 28.4 15 0.5436 0.86662
1.041 2.289 28.3 15 0.5436 0.83809
1.384 2.289 28.5 15 0.5436 0.82463
1.738 2.289 28.7 15 0.5436 0.82070
2.081 2.289 28.6 15 0.5436 0.81127
2.081 2.289 29.8 15 0.5436 0.80037
2.081 1.873 29.5 15 0.5436 0.75442
2.081 1.457 29.8 15 0.5436 0.67626
2.081 1.041 30.1 15 0.5436 0.35148
2.081 0.624 30.1 15 0.5436 0.22442
1.738 2.289 27.9 23 0.5376 0.64598
1.738 2.289 27.9 19 0.5117 0.76609
1.738 2.289 27.9 15 0.5453 0.72738
1.738 2.289 28.4 11 0.4663 0.83432
1.738 2.289 28.1 7  0.5205 0.86532
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dingd

铁杆木虫 (职业作家)

【答案】应助回帖

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感谢参与,应助指数 +1
独孤神宇: 金币+1, 马甲存档 2018-03-16 19:51:08
/Parameters x1,x2,x3,x4,x5,x6,x7,x8,z1,z2,z3,z4,z5;
//Variable z1,z2,z3,z4,z5,y;
//Function y =(1-(x1*((z1/z2).^x2)*exp(x3*z3/z4))/((225.^x4)z5.^x5))/(1-(x6*exp(x7*z3/z4))/(z5.^x8));

改成:
Parameters x1,x2,x3,x4,x5,x6,x7,x8;
Variable z1,z2,z3,z4,z5,y;
Function y =(1-(x1*((z1/z2)^x2)*exp(x3*z3/z4))/((225^x4)*z5^x5))/(1-(x6*exp(x7*z3/z4))/(z5^x8));
2楼2018-03-16 14:56:10
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