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Rebellos

Applied Mathematics - National Technical University of Athens

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

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22 How to find the following limit algebraically? Jan 26 '18
22 Why do I have to use a quadratic equation? Nov 23 '17
18 Adult learner returning to maths Nov 23 '18
14 Value of $\lim_{n \to \infty}\frac{\sqrt{1}+\sqrt{2}+\sqrt{3}+\cdots+\sqrt{n-1}}{n\sqrt{n}}$ Dec 15 '18
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 '19
11 Solve the ODE : $(x\sin(y)+y\cos(y))dx+(x\cos(y)-y\sin(y))dy=0$ Jan 1 '18
11 Find all increasing idempotent functions on $\mathbb{R}$ Apr 14 '17
10 How to calculate the limit $\lim_{x\to + \infty} \frac{\sqrt{x^2+4}}{x}$? Dec 31 '17
10 Imaginary vs Complex roots Dec 30 '17
10 Has there ever been an application of dividing by $0$? May 3 '16
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