$\lim _{n}$ ${\rightarrow \infty} n^{-n k} \left\{(n+1)\left(n+\frac{1}{2}\right)\left(n+\frac{1}{2^2}\right) \ldots\left(n+\frac{1}{2^{k-1}}\right)\right\}^n=$

  • A
    $2$
  • B
    $e^{2\left(1-\frac{1}{2^k}\right)}$
  • C
    $2\left(1-\frac{1}{2^k}\right)$
  • D
    $e^2$

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$\lim _{x \rightarrow 0} \frac{\sin ^2 x}{\sqrt{2}-\sqrt{1+\cos x}}$ ની કિંમત શોધો.

ધારો કે $f(x)$ એ વિકલનીય વિધેય છે જેથી $f(0)=0$ અને $f^{\prime}(0)=20$ થાય. $x \in \left(0, \frac{\pi}{2}\right]$ માટે,જો $A(x)=2 f(x) \operatorname{cosec} 4 x+4 f(x)\left(\cos ^2 x+1\right)-4 \cos ^2 x$ હોય,તો $\lim _{x \rightarrow 0} A(x)=$

જો $[x]$ એ $x$ થી નાનો અથવા તેના બરાબરનો મહત્તમ પૂર્ણાંક દર્શાવે,તો $\mathop {\lim }\limits_{x \to 1} (1 - x + [x - 1] + [1 - x])$ ની કિંમત શોધો.

$\lim _{x \rightarrow-\infty} \log _e(\cosh x)+x=$

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