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If f(9) = 9, f′(9) = 4, then lim(x→9) (√f(x) - 3)/(√x - 3) = (A) 2 (B) 4 (C) -2

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If f(9) = 9, f′(9) = 4, then  lim(x→9) (√f(x) - 3)/(√x - 3) =

(A) 2 

(B) 4 

(C) -2 

(D) -4

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1 Answer

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Answer is (B) 4

Applying L’Hospital’s rule,

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