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\[ \large \sum_{k=0}^{mn-1} \exp_{-1} \Bigg ( \left \lfloor \frac km \right \rfloor + \left \lfloor \frac kn \right \rfloor \Bigg) \]
Let \(S(n)\) denote the sum of the digits of an positive integer \(n\).
Find the ...
To enter the Club of Abusers, you have to pass a qualifying exam of \(100\) True ...
Let \(S = \displaystyle\sum_{n=1}^{\infty} \dfrac{f(n)}{n}\) be a variable sum where ...
Today is Alokananda's Birthday ...
Find the derivative of function \(y = x^x\).
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