文件名称:最小二乘法拟合
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%最小二乘法下用a*sin（x）+b*cos（x）拟合下列散点坐标
%求出拟合系数a，b和方差Dx(The least square method is used to fit the following scatter coordinates with a*sin (x) +b*cos (x)
The fitting coefficients a, B and variance Dx were calculated)
%求出拟合系数a，b和方差Dx(The least square method is used to fit the following scatter coordinates with a*sin (x) +b*cos (x)
The fitting coefficients a, B and variance Dx were calculated)
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