2 Functions (20) Is f a function from R to R if f(x)y or why not? (3) If f(x) is a function from the set of integer to the set of integers, explain with example 2 + 3 and f(x) = Irl + 5 are onto and/or one-to-one functions. (6) Explain with example whyx) real number? (3) is not invertible from the set of real number to th . Let a set given as, S--1, 0,2,4Find f(S) and determine if it is an one-to-one and/ function when, (8) -f(x)-1 fx)-2x 1 Are any of the above functions bijection