यदि $\lim _{x \rightarrow 0} \frac{ax-(e^{4x}-1)}{ax(e^{4x}-1)}$ का अस्तित्व है और यह $b$ के बराबर है,तो $a-2b$ का मान ....... है।

  • A
    $10$
  • B
    $3$
  • C
    $5$
  • D
    $6$

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यदि $\lim _{x}$ ${\rightarrow \infty} \frac{(\sqrt{2 x+1}+\sqrt{2 x-1})^8+(\sqrt{2 x+1}-\sqrt{2 x-1})^8(P x^4-16)}{(x+\sqrt{x^2-2})^8+(x-\sqrt{x^2-2})^8} = 1$ है,तो $P=$

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