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Mathematics
Renji Rodrigo's user avatar
Renji Rodrigo's user avatar
Renji Rodrigo's user avatar
Renji Rodrigo
  • Member for 6 years, 11 months
  • Last seen more than a month ago
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About

Hello! my name is Rodrigo Carlos Silva de Lima (Renji is only a nick name xD). In this moment i am a

Student in UFRJ (Federal University of Rio de Janeiro )

You can find some of my notes here (in portuguese ) and a lot of memes (jokes)

http://estruturaimperfeita.blogspot.com.br/2017/12/textos-gratuitos-de-matematica-para.html

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9
Prove that the set of invertible elements in a Banach algebra is open
Jan 20, 2018
answer
5
difference of difference is constant question
Jan 23, 2018
answer
5
Prove that the series $\sum_{n=1}^{\infty}\frac{1}{(n+x)(n+x+1)(n+x+2)}$ has a sum of $\frac{1}{2(x+1)(x+2)}$
Jan 31, 2018
answer
4
$\lim_{n\to \infty} {1\over n}\sqrt[n]{(n+1)(n+2)\cdots(2n)}$
Jan 19, 2018
answer
3
Proof of $\int_{a}^{a} f(x)dx = 0$
Jan 22, 2018
answer
3
How to compute $\lim_{x\to 0}\frac{e^x -1-x-\frac{x^2}{2}}{x^3}$ without using L'Hospital rule?
Jan 23, 2018
answer
3
Prove $\frac{1}{\exp(z)}=\exp(-z)$ by Taylor series
Jan 26, 2018
answer
2
Is an Operator to the Zeroeth Power the Identity?
Jan 24, 2018
answer
2
Find the closed form of $u_{n+1}=a_nu_n+b_n$
Jan 31, 2018
answer
1
Showing Harmonic series is divergent. (question on summation properties)
Jan 20, 2018