Functions Question 255

Question: $ x=1 $

[MP PET 2002]

Options:

A) $ {\log_{e}}3 $

B) 0

C) 1

D) $ f(x) $

Show Answer

Answer:

Correct Answer: D

Solution:

$ \underset{x\to 0}{\mathop{\lim }},\frac{{\log_{e}}(1+x)}{3^{x}-1} $ , $ ( \frac{0}{0},\text{ form} ) $ Using L-Hospital?s rule, $ \underset{x\to 0}{\mathop{\lim }},\frac{\frac{1}{1+x}}{3^{x}{\log_{e}}3}=\frac{1}{{\log_{e}}3}={\log_3}e $ .