સમીકરણ $2 \cosh 2x + 10 \sinh 2x = 5$ નો ઉકેલ શોધો.

  • A
    $\frac{1}{2} \log \left(\frac{3}{5}\right)$
  • B
    $\frac{1}{2} \log \left(\frac{4}{3}\right)$
  • C
    $\frac{1}{2} \log \left(\frac{5}{4}\right)$
  • D
    $\frac{1}{2} \log \left(\frac{5}{3}\right)$

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$a>0, x \in R$ માટે પદાવલિ $\begin{aligned} & 1+x \log _e a+\frac{x^2}{2 !}\left(\log _e a\right)^2+\frac{x^3}{3 !}\left(\log _e a\right)^3+\ldots \end{aligned}$ કોના બરાબર છે?

શ્રેણી $\frac{2}{1!} + \frac{6}{2!} + \frac{12}{3!} + \frac{20}{4!} + \dots$ નો સરવાળો કેટલો થાય?

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$\sum_{n=1}^{\infty} \frac{2n}{(2n+1)!}$ ની કિંમત શોધો.

શ્રેણી $\frac{1}{2!} - \frac{1}{3!} + \frac{1}{4!} - \dots$ નો સરવાળો શું થાય?

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