单项选择题
A.datenumB.datestrC.datevecD.dateday
A.AB.BC.CD.D
A.’MATLAB’B.MATLABC."MATLAB"D.(’MATLAB’)
A.det()B.eig()C.rank()D.diag()
A.A(3)=[]B.A(:,3)=[]C.A(3,:)=[]D.A(3,3)=[]
A.ans=4B.ans=2C.b=4D.b=2
A.zeros(3)B.rand(3)C.ones(3)D.eye(3)
A.int16()B.unint16()C.int8()D.unint8()
A.ans=4B.ans=2C.4D.2