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Rebellos
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About

Engineer of Applied Mathematics - National Technical University of Athens

Interested in: Functional Analysis & Operator Theory, ODEs-PDEs-Dynamical Systems

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View all questions and answers
22
Why do I have to use a quadratic equation?
Nov 23, 2017
22
How to find the following limit algebraically?
Jan 26, 2018
18
Adult learner returning to maths
Nov 23, 2018
16
Value of $\lim_{n \to \infty}\frac{\sqrt{1}+\sqrt{2}+\sqrt{3}+\cdots+\sqrt{n-1}}{n\sqrt{n}}$
Dec 15, 2018
15
Every linear operator $T:X \to Y$ on a finite-dimensional normed space is bounded
Nov 3, 2018
14
How to find $\lim \limits_{x \to 0} \frac{\sqrt{x^3+4x^2}} {x^2-x}$ when $x\to 0^+$ and when $x\to 0^-$?
Feb 13, 2019
13
How to determine the existence of limit cycle?
Nov 5, 2018
12
Solve the ODE : $(x\sin(y)+y\cos(y))dx+(x\cos(y)-y\sin(y))dy=0$
Jan 1, 2018
11
Stability when eigenvalues are zero : $x' = -x + y + x^2 + ax^3, \space y' = x - y + x^2 + bxy + y^3$
Jan 11, 2018
11
Find all increasing idempotent functions on $\mathbb{R}$
Apr 14, 2017