Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Problem
Problem
Which one of the following is a bijective function on the set of real numbers a.
2
x
−
5
2x - 5
2
x
−
5
b.
∣
x
∣
|x|
∣
x
∣
c.
x
2
x^2
x
2
d.
x
2
+
1
x^2 + 1
x
2
+
1
Browse the problem library