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dingd

铁杆木虫 (职业作家)

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csgt0: 金币+1, 多谢应助 2012-08-01 15:46:45
用1stOpt求解试试:
CODE:
Function  y=(A1*x^2+A2*x+A3*Ka1*Ka2)/(x^2+Ka1*x+Ka1*Ka2);
Data;
xdata=0.1*[1.8,2,2.4,2.9,3.35,4.3,5.4,6.8,7.5,8,8.5,9.5,10.5,11,11.4];
ydata=[1.279,1.282,1.291,1.331,1.344,1.336,1.339,1.34,1.33,1.296,1.221,1.128,1.091,1.067,1.065];

均方差(RMSE): 0.0131572173413872
残差平方和(SSE): 0.0025966855225275
相关系数(R): 0.991831111193116
相关系数之平方(R^2): 0.983728953130572
决定系数(DC): 0.983728953130572
卡方系数(Chi-Square): 0.0010006654437817
F统计(F-Statistic): 153.647151290385

参数        最佳估算
----------        -------------
a1        1.18544583254516
a2        -2.07683603846454
a3        1.27388100838787
ka1        -1.68649267034603
ka2        -0.464865470003857


11楼2012-08-01 15:07:37
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