JEE Main 2020 — Functions Question with Solution
From: JEE Main 2020 (Online) 8th January Morning Slot
Question
The inverse function of
f(x) = , x (-1, 1), is :
f(x) = , x (-1, 1), is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
f(x) = = y
= 84x
= 4x
x =
f-1(x) =
= 84x
= 4x
x =
f-1(x) =
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This is a previous-year question from JEE Main 2020, covering the Functions chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.