यदि $f(x) = \frac{e^{1/x} - 1}{e^{1/x} + 1}$ है,तो

  • A
    $\lim_{x \rightarrow 0^+} f(x) = 1$
  • B
    $\lim_{x \rightarrow 0^-} f(x) = -1$
  • C
    $\lim_{x \rightarrow 0} f(x) = 0$
  • D
    $\lim_{x \rightarrow \infty} f(x) = 0$

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