Does anyone have any experience with matrices and R?

Problem 3: Matrices o Create a 3 x 6 matrix where each row.r has the following sequences: (1,2,3, 4, 5, 6), (5,5,5, 3, 3, 3), (2,3,4, 2, 3, 4). Call this G. Print the result. 0 You must use sequences, or reps to do this. Compute the sum and covariance of the rst 3 x 3 and second 3 x 3 matrix. 0 What is the variance of the rst row? What is the sum of the entries 01,1,G3'3,G2,4 times the variance of the third row? a Set all 1values of G that are less than 5 to take values 1 to n where n. is the number of entries that are less than 5