A) Let A = {1, 2, 3, 4} and Ra relations on A whose matrices is...

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A) Let A = {1, 2, 3, 4} and Ra relations on A whose matrices is MR = [1 0 1 1] %3D 0 1 1 1 0 1 1 0 0 1 1) Show that (A, R) is a poset (5 pts) 2) Find maximal, minimal, least and greatest if they exist (4 pts) B) Find the root and the height of (T, vo) where A = {1,2, 3, 4, 5, 6} and T = {(1,4), (3, 2), (2,1), (1, 5), (2, 6)} (Show your work) (5 pts) %3D C) Evaluate the expression which is given in pre-order notation (4 pts) - x 54 ÷ +68+ 43 A) Let A = {1, 2, 3, 4} and Ra relations on A whose matrices is MR = [1 0 1 1] %3D 0 1 1 1 0 1 1 0 0 1 1) Show that (A, R) is a poset (5 pts) 2) Find maximal, minimal, least and greatest if they exist (4 pts) B) Find the root and the height of (T, vo) where A = {1,2, 3, 4, 5, 6} and T = {(1,4), (3, 2), (2,1), (1, 5), (2, 6)} (Show your work) (5 pts) %3D C) Evaluate the expression which is given in pre-order notation (4 pts) - x 54 ÷ +68+ 43