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Table of Contents
The outline of your notebook will show up here. You can include headings in any text cell by starting a line with # , ## , ### , etc., depending on the desired title hierarchy.
matrix1 <- matrix(1:9, byrow=FALSE, nrow=3)
matrix2 <- matrix(1:9, byrow=FALSE, nrow=3)
my_matrix <- matrix1[1:3,2]+matrix2[2:3,2]
my_matrix