matrix(rep(3,8), nrow=4) [,1] [,2] [1,] 3 3 [2,] 3 3 [3,] 3 3 [4,] 3 3 > matrix(3, nrow=4, ncol=3) [,1] [,2] [,3] [1,] 3 3 3 [2,] 3 3 3 [3,] ...
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