Mathematics
Haruhiko Nakahara's user avatar
Haruhiko Nakahara's user avatar
Haruhiko Nakahara's user avatar
Haruhiko Nakahara
  • Member for 4 years, 5 months
  • Last seen more than 2 years ago
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question
1
The name of a quartic curve: The product of the distance to the focus and to the directrix is the constant.
Jun 26, 2020
answer
1
Quadratic equation representing a point.
Nov 7, 2019
answer
1
Asymptote of $x^2 + y^2 -3xy = 1$
Jun 26, 2020
answer
0
Number of regions formed by $n$ great circles on the sphere
Apr 19, 2021
answer
-1
$Ax^2+Bxy+Cy^2=1$ with $A=C=1$ and $B=2$ should be a parabola (because $B^2 = 4 AC$). Instead, it represents parallel lines. What went wrong?
Nov 7, 2019
answer
-1
Finding a closed form solution for recurrence
Nov 8, 2019