Function  y= a*x^(-11)+b*x^(-31);
Data;
x=[0.066667,0.133333,0.2,0.266667,0.333333,0.4,0.466667,0.533333,0.6,0.666667];
y=[0.073,0.0145,0.023,0.0017,0.0013,0.0013,0.0023,0.0005,0.0003,0.0009];

Function  y= a*x^(-11)+b*x^(-31)+c;
Data;
x=[0.066667,0.133333,0.2,0.266667,0.333333,0.4,0.466667,0.533333,0.6,0.666667];
y=[0.073,0.0145,0.023,0.0017,0.0013,0.0013,0.0023,0.0005,0.0003,0.0009];

2楼: Originally posted by dingd at 2014-07-11 16:40:01
1stOpt求解：

Function  y= a*x^(-11)+b*x^(-31);
Data;
x=;
y=;

均方差(RMSE):0.00730705877927612
残差平方和(SSE):0.000533931080037963
相关系数(R): 0.953599387787668
相关系数之平方(R^2): 0.90 ...

4楼: Originally posted by 月只蓝 at 2014-07-11 19:31:26
2楼的专家已经给出代码，而且他的计算结果应该是最优了。
不过就方法而言，包括Origin在内的4款软件操作步骤参见：
http://muchong.com/bbs/viewthread.php?tid=6572963&authorid=1122189