જો $A \neq 0$ અને $x > 0$ હોય,તો $\lim _{n \rightarrow \infty} \frac{\cos x - e^{nx}}{1 - A e^{nx}} = $

  • A
    અસ્તિત્વ ધરાવતું નથી
  • B
    $1$
  • C
    $\frac{\cos x}{A}$
  • D
    $\frac{1}{A}$

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જો $S_1 = \sum_{r=1}^{n} r$,$S_2 = \sum_{r=1}^{n} r^2$,અને $S_3 = \sum_{r=1}^{n} r^3$ હોય,તો $\lim_{n \rightarrow \infty} \frac{S_1(1 + \frac{S_3}{4})}{S_2^2}$ ની કિંમત શોધો.

જો $l, m$ $(l < m)$ એ $ax^2 + bx + c = 0$ ના બીજ હોય,તો $\lim_{x \rightarrow \alpha} \frac{|ax^2 + bx + c|}{ax^2 + bx + c} = $

જો $\alpha = \lim_{x \rightarrow 0^{+}} \left( \frac{e^{\sqrt{\tan x}} - e^{\sqrt{x}}}{\sqrt{\tan x} - \sqrt{x}} \right)$ અને $\beta = \lim_{x \rightarrow 0} (1 + \sin x)^{\frac{1}{2} \cot x}$ એ દ્વિઘાત સમીકરણ $ax^2 + bx - \sqrt{e} = 0$ ના બીજ હોય,તો $12 \log_e(a + b)$ ની કિંમત ............. થાય.

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