单项选择题
A.条件数B.范数C.秩D.迹
A.A+30*eye(size(A)) B.A+30*eye(A) C.A+30*ones(size(A)) D.A+30*eye(4)
A.P=diag(flipud(pascal(6))) B.P=diag(diag(flipud(pascal(6)))) C.P=diag(flipud(pascal(5))) D.P=diag(diag(flipud(pascal(5))))
A.M=magic(3) B.M=MAGIC(3) C.M=Magic(3) D.M=magic(1,3)
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