Let f:R→R be such that f(1) = 3 and f’ (1) = 6.Then limx→0 f(1+x)f(1)1/x equals.

# Let $f:R\to R$ be such that f(1) = 3 and f' (1) = 6.Then $\underset{x\to 0}{lim} {\left\{\frac{f\left(1+x\right)}{f\left(1\right)}\right\}}^{1/x}$ equals.

1. A

1

2. B

${e}^{1/2}$

3. C

${e}^{2}$

4. D

${e}^{3}$

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