JEE MAIN - Mathematics Hindi (2019 - 12th April Evening Slot - No. 14)

एक $$\alpha $$ का मान ऐसा कि
$$\int\limits_\alpha ^{\alpha + 1} {{{dx} \over {\left( {x + \alpha } \right)\left( {x + \alpha + 1} \right)}}} = {\log _e}\left( {{9 \over 8}} \right)$$ है :
2
- 2
$${1 \over 2}$$
$$-{1 \over 2}$$

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