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注册日期: 2010-03-31
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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 |
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