Find the infimum, minimum, maximum and supremum of each of the following sets (write d.n.e. if it does not exist). S inf S min S max S sup S {1-;\neN} {xER | x³-4x²+x+6 >0} | m, n E N} m n 00 1--, 2+ n n n=1 {XEQ | x ≤ 2}