[mathjiang]

x是1*27的向量，y是1*9的向量。

x1=[-292.2,-137.3,1120.9,-33877.0,-35100.1,33812.2,-48791.0,-74.3,48609.9];
x2=[-35588.1,-36343.4,35635.9,-808.6,-24.9,-330.5,-298.3,-50834.3,-466.1];
x3=[35238.0,-34957.3,-35201.9,35506.2,-34776.5,-35558.4,-971.7,-1357.6,-219.5];
x=[x1;x2;x3]; %其中逗号改为分号.