Kenneth Rosen Edition 7 Exercise 2.3 Question 30 (Page No. 154)

Question

Let $S= \left \{ -1,0,2,4,7 \right \}$. Find $f(S)$ if

1. $f(x) =1$
2. $f(x) = 2x+1$
3. $f(x) =\left \lceil x/5 \right \rceil$
4. $f(x) = \left \lfloor (x^2+1)/3 \right \rfloor$