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Mathematics
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Marconius's user avatar
Marconius's user avatar
Marconius
  • Member for 9 years, 5 months
  • Last seen more than 8 years ago
  • Johannesburg, South Africa
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question
16
Is it possible to put an equilateral triangle onto a square grid so that all the vertices are in corners?
Jul 13, 2015
answer
13
How to solve $\ x^2-19\lfloor x\rfloor+88=0 $
Sep 20, 2015
answer
11
What is the maximum number of points of intersection of 8 circles?
Nov 13, 2015
question
10
Prove that $(\sqrt2 − 1)^n, \forall n \in \mathbb{Z^+}$ can be represented as $\sqrt{m} − \sqrt{m−1}$ for some $m \in \mathbb{Z^+}$ (no induction).
Jul 20, 2015
answer
9
Collection of surprising identities and equations.
Oct 26, 2015
question
8
Determine all functions $f:\mathbb{N}\rightarrow\mathbb{N}$ such that $xf(y)+yf(x)=(x+y)f(x^2+y^2)$ for all $x,y\in\mathbb{N}$ (contest question)
Jul 27, 2015
question
7
Is it possible to choose $10$ distinct numbers from the set $\{0, 1, 2, . . . , 14\}$ so that various differences are all distinct?
Jul 20, 2015
answer
7
How to construct the point of intersection of a line and a parabola whose focus and directrix are known?
Jul 13, 2015
answer
7
Construct an example of a function with period 1 which is not a trig function and is differentiable at every point.
Sep 24, 2015
question
6
Find all pairs of prime numbers $p , q$ for which: $p^2 | q^3 + 1$ and $q^2 | p^6 − 1$.
Sep 14, 2015
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21
Is there a term for ascribing acts of the human mind to non-human objects, and when is it appropriate to do this?
20
Erasmus additions
14
An adjective or noun for someone who "has a lot of gall"?
14
Aliens are continuing to probe the human psyche. Help humanity to score a perfect 10 by finding the missing figure
12
In which cities do the following puns apply?