JEE MAIN - Mathematics Hindi (2022 - 25th June Evening Shift - No. 17)

$$ b>3$$ का वह मान, जिसके लिए $$12 \int_{3}^{b} \frac{1}{\left(x^{2}-1\right)\left(x^{2}-4\right)} d x=\log _{e}\left(\frac{49}{40}\right)$$ है, है _______________
Answer
6

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