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Sazid Akhter Turzo
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FE/ DE/ IE :P

Unread post by Sazid Akhter Turzo » Tue Jun 19, 2012 12:52 pm

Find all functions $f$ such that
$\left ( \int f(x) dx \right )\left ( \int \frac{1}{f(x)} dx \right ) = -1$

(might be easy)
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