ધારો કે $(2^{1-a} + 2^{1+a})$, $f(a)$, $(3^a + 3^{-a})$ સમાંતર શ્રેણી ($A$.$P$.) માં છે અને $\alpha$ એ $f(a)$ ની ન્યૂનતમ કિંમત છે. તો સંકલન $\int_{\log_e(\alpha-1)}^{\log_e(\alpha)} \frac{dx}{(e^{2x} - e^{-2x})}$ ની કિંમત શોધો:

  • A
    $\frac{1}{2}\log_e(\frac{4}{3})$
  • B
    $\frac{1}{4}\log_e(\frac{4}{3})$
  • C
    $\frac{1}{2}\log_e(\frac{8}{5})$
  • D
    $\frac{1}{4}\log_e(\frac{8}{5})$

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