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Mathematics
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trombho's user avatar
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trombho
  • Member for 5 years
  • Last seen more than 2 years ago
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7
Conjecture: There is no $n\neq3$ such that $\arctan(1)+\arctan(2)+\cdots+\arctan(n)=\frac{k\pi}{2}$, with $k$ integer.
Sep 16, 2019
5
Area triangle (possible)
Nov 15, 2019
5
Calculate the value of angle $ACB$
Dec 20, 2019
4
Midpoints, bisectors, orthocenter, incenter and circumcenter
Nov 4, 2019
4
Greatest prime divisor of $ n^2+1$
Oct 8, 2019
4
Number primes digits
Oct 8, 2019
3
How many angles have integer measure in degrees and are interior angles of an integer-sided triangle?
Dec 15, 2019
3
Find all integers
Sep 20, 2019
3
Verification of my solution of the functional equation $ f \left( x + y ^ 2 \right) = f ( x ) +f ( y ) ^ 2 $
May 1, 2021
3
Numeric combination
Nov 17, 2019