Mathematics
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Felix Marin
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Physics Ph.D. ( UCSD 1983 ). Advisor: Professor Harry Suhl.

Retired Professor. Physics School ( UCV ). Caracas.

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81
What is $\int_0^1\frac{x^7-1}{\log(x)}\mathrm dx$?
Nov 14, 2013
answer
79
Surprising identities / equations
Sep 29, 2013
answer
51
How are the Taylor Series derived?
Mar 10, 2014
answer
46
A conjectured closed form of $\int\limits_0^\infty\frac{x-1}{\sqrt{2^x-1}\ \ln\left(2^x-1\right)}dx$
Oct 16, 2013
answer
41
Probability that a quadratic equation has real roots
Sep 8, 2020
answer
30
Evaluating $\lim\limits_{n\to\infty} e^{-n} \sum\limits_{k=0}^{n} \frac{n^k}{k!}$
Nov 12, 2013
answer
29
Funny identities
Sep 26, 2013
answer
28
Prove that $x^3 + x^2 = 1$ has no rational solutions?
Oct 17, 2013
answer
25
How to prove this $\pi$ formula?
Feb 18, 2017
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23
Integral $\int_0^1 \log \Gamma(x)\cos (2\pi n x)\, dx=\frac{1}{4n}$
May 6, 2014
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