9. Write the R command for creating the following 5X5 matrix A [Image result for 5 x 5 matrix] 0 0 0 1 -1 3 0 -3 -2 0 2 -1 1 -1 0 1 a) Write the R command to extract the 4th column of the given matrix. b) Write the R command to extract the following sub matrix. -3 -21 c)Write the R command for updating the 4th row and 3rd col as 5.

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