JEE Main 2020 — Application Of Derivatives Question with Solution
From: JEE Main 2020 (Online) 3rd September Morning Slot
Question
The function, f(x) = (3x – 7)x2/3, x R, is
increasing for all x lying in :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
f(x) = (3x – 7)x2/3
f’(x) =
=
=
As f(x) increasing so f'(x) > 0
> 0
x
f’(x) =
=
=
As f(x) increasing so f'(x) > 0
> 0
x
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