Question

Let S = {−1, 0, 2, 4, 7}. Find f (S) iff (x) = 2x + 1.

Answer 1

Answer:

{ -1, 1, 5, 9, 15 }

Explanation:

S = { -1, 0, 2, 4 ,7 }

f(S) = set of all the real values obtained by calculating 2 * x + 1, where

                 x belongs to S.

f(x) = 2x+1 for S = {-1,0,2,4,7)

f(-1) =2*(-1)+1 = -1

f(0)  =2*(0)+1 = 1

f(2) = 2*2+1 = 5

f(4) = 2*4+1 = 9

f(7) = 2*7+1 15

     Answer      =    { -1, 1, 5, 9, 15 }