Question

If \(\lim _{x \rightarrow 0}\left(\frac{1+c x}{1-c x}\right)^{1 / x}=4\), then \(\lim _{x \rightarrow 0}\left(\frac{1+2 c x}{1-2 c x}\right)^{1 / x}\) is
(A) 2
(B) 4
(C) 16
(D) 64

Answer 1

Ans: (C)
Hint : \(e^{2 c}=4 \Rightarrow e^{4 c}=16\)

Answer 2

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Answer 3

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