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Huy
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I'm a high school maths teacher in Switzerland.

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101
Anecdotes about famous mathematicians or physicists [closed]
Mar 24, 2011
84
Non-zero eigenvalues of $AA^T$ and $A^TA$
Dec 31, 2014
62
What are some applications of elementary linear algebra outside of math?
Dec 17, 2014
58
Is there a vector space that cannot be an inner product space?
Nov 29, 2012
40
What are some applications of elementary linear algebra outside of math?
Dec 17, 2014
29
Prove by induction that for all $n \geq 3$: $n^{n+1} > (n+1)^n$
Nov 1, 2011
22
For $G$ group and $H$ subgroup of finite index, prove that $N \subset H$ normal subgroup of $G$ of finite index exists
Jun 24, 2013
21
A program to draw simple geometry (points, lines, dotted lines etc.)
Apr 6, 2012
21
A simple way to evaluate $\int_{-a}^a \frac{x^2}{x^4+1} \, \mathrm dx$?
May 5, 2011
18
What are some applications of elementary linear algebra outside of math?
Dec 17, 2014
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31
iTunes starts automatically at startup on Windows 10
24
Current state of LaTeX on iPad?
16
Where does this equation originate from? (found in the Big Bang Theory)
13
What can I safely put between my cast iron skillet and induction glass top stove to prevent scratches?
13
Should my high school students use tablets or conventional calculators?