Solution (a) R = {(a,b) = (Z>0)²: Ak € Z such that a o. There can exist no real number c such that a o satisfy (a,b) € R. Then there is no k € Z such that a

Find he alative morima and minima, H any tar the fuechon If there is not an answer wite /A Wade ms wefo as albered paics.

8. Suppose the variables x and y represent real numbers, and L(x, y) : x < y, Q(x, y) : x = y, E(x) : x is even, I(x) : x is an integer. Write the statement using these predicates and any needed quantifiers. a) Every integer is even. b) If x < y, then x is not equal to y. c) There is no largest real number.