Functions Question 661
Question: Which of the following function is invertible
[AMU 2001]
Options:
A) $ f(x)=2^{x} $
B) $ f(x)=x^{3}-x $
C) $ f(x)=x^{2} $
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
A function is invertible if it is one-one and onto.