Answer
Odd
Work Step by Step
When $x\ge0,$
$f(x)=x|x|=x\times x=x^{2}$
$f(-x)=-x|-x|=-x\times x=-x^{2}$
$f(-x)=-f(x)$
When $x\lt0,$
$f(x)=x|x|=x\times-x=-x^{2}$
$f(-x)=-x|-x|=-x\times-x=x^{2}$
$f(-x)=-f(x)$
$\therefore f(x)$ is odd.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.