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# Hermite Identity in Math Olympiad, ISI CMI Entrance

In mathematics, periodic functions play a very important role. Examples include $f(x) = \sin (x)$, $f(x) = \{x \}$ and so on. We discuss an interesting property of greatest integer function using the technique periodicity.

In mathematics, periodic functions play a very important role. Examples include $f(x) = \sin (x)$, $f(x) = \{x \}$ and so on. We discuss an interesting property of greatest integer function using the technique periodicity.

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