[浣溪沙]

用Matlab拟合一个函数中的三个常量未知数a，b，c，方程如下：
y=a.*x1+b+(a.*x1.^2+c+a.*x2.*x3+b.*x3+x4;

y都等于0,代入一系列x1、x2、x3、x4值。

返回了下面结果，请帮我看下结果是什么意思。想得到a b c三个常数的，是不是哪里出了问题？？？谢谢啦


c =

1


c =

1


c =

1


c =

1.000006055454452e+000


c =

2.299703729432441e+003


c =

2.299703729432441e+003


c =

2.299703729432441e+003


c =

2.299717655183629e+003


c =

3.655541335145097e+003


c =

3.655541335145097e+003


c =

3.655541335145097e+003


c =

3.655563471109150e+003


c =

3.826143564159564e+003


c =

3.826143564159564e+003


c =

3.826143564159564e+003


c =

3.826166733197645e+003


c =

3.830203817637201e+003


c =

3.830203817637201e+003


c =

3.830203817637201e+003


c =

3.830227011261962e+003


c =

3.830218552759134e+003


betafit =

Columns 1 through 2

4.414128508281884e+001 -4.364690005479137e+002

Column 3

3.830218552759134e+003