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Américo Tavares

Member for 12 years, 10 months
Last seen this week

problemasteoremas.wordpress.c…
Queluz, Lisbon, Portugal

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complex-numbers

85/100 score

19/20 answers

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13

103

243

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33/100

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Answers

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Score Activity Newest

250

The Basel problem

Oct 30, 2010

80

What is the Jacobian matrix?

Dec 20, 2010

70

Nice proofs of $\zeta(4) = \frac{\pi^4}{90}$?

Mar 21, 2011

51

What is the result of $\infty - \infty$?

Aug 30, 2011

46

Evaluation of Gaussian integral $\int_{0}^{\infty} \mathrm{e}^{-x^2} dx$

Nov 7, 2010

Questions

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Score Activity Newest Views

59

What is the importance of Calculus in today's Mathematics?

Aug 17, 2011

49

Is $\sqrt[3]{p+q\sqrt{3}}+\sqrt[3]{p-q\sqrt{3}}=n$, $(p,q,n)\in\mathbb{N} ^3$ solvable?

Apr 27, 2013

45

What does closed form solution usually mean?

Nov 6, 2010

34

How to prove $\cos \frac{2\pi }{5}=\frac{-1+\sqrt{5}}{4}$?

Oct 24, 2010

29

Asymptotic (divergent) series

Mar 23, 2012

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calculus

1,336

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integration

702

Score

129

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algebra-precalculus

558

Score

125

posts

trigonometry

465

Score

107

posts

sequences-and-series

344

Score

55

posts

Reputation

+10

Equation for getting the length of the minor axis (of an ellipse)

+10

What are the steps to perform this algebraic simplification

+10

$\frac{a}{\sqrt{a+b}} + \frac{b}{\sqrt{b+c}} + \frac{c}{\sqrt{c+a}} > \sqrt{a+b+c}$ is true for positive a,b,c

+10

Is it true that $x^{\log_z(y)} = y^{\log_z(x)}$?

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calculus

May 26, 2015
Copy Editor

Apr 5, 2013
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Jul 16, 2013

103

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trigonometry

Dec 16, 2014
algebra-precalculus

Aug 29, 2014
integration

Jan 2, 2014

243

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analytic-geometry

Jun 1, 2019
indefinite-integrals

Jan 22, 2014
improper-integrals

Jan 20, 2015

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