Explanation:

(a) 

𝑓(𝑥) = 𝑥 |𝑥|

Case I : If x &ge; 0, |x| = + x &there4; f(x) = x/x = 1

Case II : if x &lt; 0, |x| = &minus; x &there4; f(x) = x/&minus;x = &minus;1

&there4; Solution set will be {1,&minus;1}.

IPMAT Indore 2022 - QA (MCQ) Q39 Explanation

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