Answer
Determine whether each of these functions is a bijection
from R to R.
a) f (x) = 2x + 1
b) f (x) = x2 + 1
c) f (x) = x3
d) f (x) = (x2 + 1)/(x2 + 2)
Work Step by Step
a) Bijection
b) Not bijection
c) Bijection
d) Not bijection
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 2 - Section 2.3 - Functions - Exercises - Page 153: 23
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