JEE MATHEMATICS MCQ: DIFFERENTIATION

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Application +4 | -1

f(9)=9

and

f^{\prime}(9)=4

, then

\lim _{x \rightarrow 9} \frac{\sqrt{f(x)}-3}{\sqrt{x}-3}

equals

View answer and explanation

Correct option: B

Option B (4) is correct because applying L'Hopital's rule and using the given values yields 4.

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