Mathematics
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shinzou
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All Questions Answers
Score Newest
question
15
Combinatorial proof of $\sum_{k=1}^n k k!=(n+1)!-1$
Mar 20, 2015
question
11
Is the sum of two distinct primes an injective function on integers?
May 3, 2018
question
11
Prove there's a simple path of length $k$ in a simple graph $G$ where all the vertices have degree of at least $k$
Jun 18, 2015
question
7
Prove if $f$ has a right inverse function: $f\circ g=id_x$ $\iff$ $f$ is onto $Y$
May 11, 2014
question
7
Finding limits using definite integrals $\lim_{n\to\infty}\sum^n_{k=1}\frac{k^{4}}{n^{5}}$
May 13, 2015
question
6
When is it allowed to take a constant out of a series?
Apr 11, 2015
question
6
How is $2^{\log_4 n}= n^{\log _42}$?
Jan 25, 2016
question
5
In every set of $14$ integers there are two that their difference is divisible by $13$
May 25, 2015
question
5
Proving that if $a,b,c\in \mathbb N$ and $a^2+b^2=c^2$ then $abc$ is even.
Jan 27, 2015
question
5
A problem with proving using definition that $\lim_{n\to\infty}\frac {n^2-1}{n^2+1}=1$
Dec 13, 2014
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Is there statistic data of how many people access the site and from which country and what times?
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176
Using map() on an iterator
107
Why is Nike pronounced "naikee" and not "naik"?
24
QuotaExceededError (DOM Exception 22): The quota has been exceeded on Safari in incognito
21
VS code indentation when copying and pasting is messed up
20
Clearing old browsing data in Chrome instead of newer data

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