Mathematics
Quang Hoang's user avatar
Quang Hoang's user avatar
Quang Hoang's user avatar
Quang Hoang
  • Member for 9 years, 7 months
  • Last seen this week
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Learning to code

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All Questions Answers
Score Newest
answer
33
Proving that the sum of any two sides of the triangle is greater than the third side
Aug 1, 2016
answer
24
Every Group is a Fundamental Group
Sep 21, 2014
answer
17
Cevians $AD$, $BE$, $CF$ are concurrent, as are cevians $DP$, $EQ$, $FR$; show that $AP$, $BQ$, $CR$ are concurrent
Dec 14, 2018
answer
17
Can an idempotent matrix be complex?
Mar 30, 2017
answer
17
Is ABC an equilateral triangle
Sep 7, 2014
answer
17
APICS Mathematics Contest 1999: Prove $\sin^2(x+\alpha)+\sin^2(x+\beta)-2\cos(\alpha-\beta)\sin(x+\alpha)\sin(x+\beta)$ is a constant function of $x$
Jul 24, 2016
answer
15
Show that $1^k+2^k+3^k+ \ldots +n^k$ is divisible by $ 1+2+3+ \ldots +n$
Oct 8, 2015
answer
13
Decide convergence divergence of $\sum \dfrac{1}{(\ln n)^{\ln n}}$
Aug 2, 2014
question
11
Regular polygon inside another?
Oct 24, 2014
answer
10
Punctured plane is not simply connected
Feb 14, 2016
Top network posts
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46
cmake error 'the source does not appear to contain CMakeLists.txt'
46
convert datetime64[ns, UTC] pandas column to datetime
36
How to find the average of the differences between all the numbers of a Python List
35
Error: ValueWarning: A date index has been provided, but it has no associated frequency information and so will be ignored when e.g. forecasting
27
Combining cv2.imshow() with matplotlib plt.show() in real time

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