$\mathop {\lim }\limits_{n \to \infty } \cos \left( {\frac{x}{2}} \right)\cos \left( {\frac{x}{4}} \right)\cos \left( {\frac{x}{8}} \right) \dots \cos \left( {\frac{x}{{{2^n}}}} \right)$ નું મૂલ્ય શું છે?

  • A
    $1$
  • B
    $\frac{{\sin x}}{x}$
  • C
    $\frac{x}{{\sin x}}$
  • D
    આમાંથી કોઈ નહીં

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$x \rightarrow 0$ હોય ત્યારે $\left[\frac{1}{x^{2}}+\frac{(2013)^{x}}{e^{x}-1}-\frac{1}{e^{x}-1}\right]$ ની લક્ષ કિંમત શું થાય?

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