>> n=3 n = 3 >> m=3 m = 3 >> ones(n,m) ans = 1 1 1 1 1 1 1 1 1 >> eye(n) ans = 1 0 0 0 1 0 0 0 1 >> zeros(n,m) ans = 0 0 0 0 0 0 0 0 0 >> diag(n) ans = 3
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