Mathematics
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zhw.
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Cauchy is mad and there is nothing that can be done about him, although, right now, he is the only one who knows how mathematics should be done. – Abel

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All Questions Answers
Score Newest
answer
73
How to show $\ \int_1^\infty\frac1xdx\ $ diverges (not using the harmonic series)?
Jul 16, 2015
answer
36
Does there exists an entire function $f: \mathbb C \to \mathbb C$ which is bounded on real line and imaginary line?
Jun 28, 2015
answer
24
Proof that $\sqrt x$ is absolutely continuous.
Nov 23, 2015
answer
23
Intuitively understanding Fatou's lemma
Aug 12, 2016
answer
22
Let $S\subset [0,1]^2$ be uncountable. Is there a line which contains infinitely many points of $S$?
Sep 30, 2017
answer
22
What's wrong with l'Hopital's rule?
May 17, 2015
answer
20
Help on a Putnam Problem from the 90s
Oct 6, 2016
answer
19
Show that $f$ is the zero function if $f''(x)=f(x)$ and $f(0)=f'(0)=0$
Dec 2, 2016
answer
19
Is there a continuous function from $[0,1]$ to $\mathbb R$ that satisfies
Aug 30, 2015
answer
17
How do i find this limit WITHOUT L'hôpitals rule
May 16, 2017

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