ધારો કે $\alpha$ અને $\beta$ એવી વાસ્તવિક સંખ્યાઓ છે કે જેથી $\lim _{x \rightarrow 0} \frac{1}{x^3}\left(\frac{\alpha}{2} \int_0^x \frac{1}{1-t^2} d t+\beta x \cos x\right)=2$ થાય. તો $\alpha+\beta$ ની કિંમત $....$ છે. ($.40$ માં)

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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$\mathop {\lim }\limits_{x \to 0} \frac{{{e^{\tan x}} - {e^x}}}{{\tan x - x}} = $

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