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Felix Marin

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 '13
73 Surprising identities / equations Sep 29 '13
45 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 '13
40 Probability that a quadratic equation has real roots Sep 8 '20
40 How are the Taylor Series derived? Mar 10 '14
28 Prove that $x^3 + x^2 = 1$ has no rational solutions? Oct 17 '13
28 Funny identities Sep 26 '13
27 Evaluating $\lim\limits_{n\to\infty} e^{-n} \sum\limits_{k=0}^{n} \frac{n^k}{k!}$ Nov 12 '13
25 How to prove this $\pi$ formula? Feb 18 '17
23 Integral $\int_0^1 \log \Gamma(x)\cos (2\pi n x)\, dx=\frac{1}{4n}$ May 6 '14
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