JEE Main 2022 — Application Of Derivatives Question with Solution
From: JEE Main 2022 (Online) 26th June Morning Shift
Question
Let , . If [a, b] is the range of the function f, then 4a b is equal to :
Choose an option
Show full solutionCorrect option: B
Correct answer
B11
Step-by-step explanation
So f(x) is decreasing function and range of f(x) is [f(1), f(1)], which is [ + 5, 5 + 9]
Now
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This is a previous-year question from JEE Main 2022, covering the Application Of Derivatives 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.