a) What is the minimum number of pairs to form a non-zero reflexive relation on a set of n elements?

b) On the set R of real numbers, S is a relation defined as S = {(x,y)/X∈R, y ∈ R, x + y = xy}. Find a ∈ R such that ‘a’

is never the first element of an ordered pair in S. Also find b ∈ R such that ‘b’ is never the second element of an ordered pair in S.

c) Consider the function f(x)=\(\frac{3x + 4}{x-2}\),x≠2 Find a function on a suitable domain such that goƒ(x) = x = ƒog(x).