JEE Main 2023MathematicsFunctionsFunctional EquationsmediumMCQ

JEE Main 2023Functions Question with Solution

From: JEE Main 2023 (Online) 10th April Morning Shift

Question

If , then the least value of is :

Choose an option

Show full solutionCorrect option: B
Correct answer
B4

Step-by-step explanation

Given that

Let us consider a similar function of ,









Hence, the least value is 4 .

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Functions chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2023, 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.