Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

If $A=\{-1,0,1\}$ and $f:A\rightarrow A$ is defined as $f(x)=x^2$, then what type of function is $f$ ?

$\begin{array}{1 1} 1-1 \;function \\ onto\;function \\ both 1-1\;and\;onto \\ neither \;1-1\;nor\;onto \end{array}$

Can you answer this question?

1 Answer

0 votes
since $f(-1)=f(1)$ $f$ is not 1-1.
Also since $-1\in A$ is not an image of any of the element in A,$f$ is not onto
answered May 25, 2013 by rvidyagovindarajan_1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App