Given a square matrix A: (1.1) We perform the operation A = R 231 2-1 3 1 -1 -3 k R-2R Find the matrices E, and B such that EA=B (Hint: Find E, then perform E, A to obtain the matrix B). Find value(s) for k [-1,0] (whenever possible) such that a33 = 33 where [al are the entries of the matrix 4 given above