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【专家解说】：A=[0.776 ,0.258 ,0.166 ,0.121 ,0.045 ,0.112 ,-0.235;0.258,0.969,0.220,0.181 ,0.196 ,-0.086 ,-0.715 ;0.166 ,0.220,0.999 ,0.276 ,0.302 ,-0.062 ,0.020; 0.121 ,0.181 ,0.276 ,0.969 ,0.293, 0.309 ,-0.139; 0.045,0.196,0.302,0.293 ,0.863, -0.161 ,0.031 ;0.112 ,-0.086 ,-0.062 ,0.309, -0.161, 1.000 ,-0.050 ;-0.235,-0.715 ,0.020 ,-0.139, 0.031, -0.050 ,1.000];[x,y]=eig(A);eigenvalue=diag(y);lamda = eigenvalue(1)y_lamda = x(:, 1)特征值lamda = 0.2074特征向量y_lamda = -0.0088 0.7057 -0.1593 0.0664 -0.1873 0.0430 0.6597