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Botond

A second-year physics student.

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39 What is the tangent at a sharp point on a curve? Mar 18 '19
15 How to evaluate $\underset{x \to 1}{\lim} \frac{x^{2019} - x^{1875}}{x-1}$. May 2 '19
13 Does Euler's formula give $e^{-ix}=\cos(x) -i\sin(x)$? Apr 13 '18
9 If $a,b\ge 0$ and $a,b \in \mathbb{R}$, then prove $\frac{a+b}{2}\ge\sqrt{ab}$ Nov 3 '18
9 Is it true that if $A^4 = I$, then $A^2 = \pm I$? Feb 25 '18
8 Why we say $i^2 = -1$ while it is $1$ Nov 29 '17
8 Why doesn't integration by substitution work in this case? Jun 8 '18
8 Where does $\pi^2$ appear spontaneously within Physical Phenomenon and Mathematics Equations? Jul 19 '19
7 Graphing the binomial coefficients: appearances? Mar 16 '18
7 Perpendicular vector from $(\cos(\theta)x, \sin(\theta)x)$ Mar 25 '18
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