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Mathematics
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anonymous
  • Member for 9 years, 6 months
  • Last seen more than 3 years ago
  • New York, United States
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Do I gain or lose reputation based on the meta website? [duplicate]
Jun 16, 2015
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How do I make a comment?
Jun 16, 2015
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Is there a place for me in MSE? [duplicate]
Jun 16, 2015
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Why are there answered questions in the unanswered question section? [duplicate]
Jun 16, 2015
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Missing Badges Thread
Jun 24, 2015
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29
Visually stunning math concepts that are easy to explain
16
Variation on Pythagoras: If $a^2 + b^2 = c^2$, then $a + b \leq c\sqrt{2}$
12
If it took 10 minutes to saw a board into 2 pieces, how long will it take to saw another into 3 pieces?
11
Find all strictly increasing functions on positive integers such that $f(f(n))=n+2$
8
Solve $\sin(5\theta)=1$, $0<\theta<2\pi$. Show that the roots of $16x^4+16x^3-4x^2-4x+1=0$ are $x=\sin{\frac{(4r+1)\pi}{10}}$, $r=0,2,3,4$.