Accessing the Matrix Elements in R

Problem:

Access the elements of a Matrix

Solution:

We can use the square brackets ( [] ) to select one or multiple elements from a matrix, similar to Vectors.Whereas vectors have one dimension and matrices have two dimensions. We need to use a comma to separate the row value selection and column value selection.
The code is as below:

To select all the elements of a row or a column, no number is needed before or after the comma, respectively:
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