माना $A = \int\limits_0^1 \frac{e^t}{1 + t} \, dt$. तो $\int\limits_{a - 1}^a \frac{e^{-t}}{t - a - 1} \, dt$ का मान ज्ञात कीजिए:

  • A
    $Ae^{-a}$
  • B
    $-Ae^{-a}$
  • C
    $-ae^{-a}$
  • D
    $Ae^a$

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निश्चित समाकलन $\int_{19}^{37} (\{x\}^2 + 3 \sin(2\pi x)) \, dx$ का मान ज्ञात कीजिए,जहाँ $\{x\}$ भिन्नात्मक भाग फलन को दर्शाता है।

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