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user1997
  • Member for 13 years, 10 months
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Is there any formula for the series $1 + \frac12 + \frac13 + \cdots + \frac 1 n = ?$ [closed]
Sep 20, 2010
4
line segment covering problem
Oct 11, 2010
1
Solving the equation $(3x + \sin x) \cos x = -3$
Apr 4, 2012