Mathematics
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She prefers to keep and air of mystery about herself $\boldsymbol{\color{red}{\heartsuit}}$.

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Score Newest
question
18
Removal of an arbitrary point of the boundary of a closed and connected $A\subseteq\Bbb R^2$ so the new set remains connected
Jan 2
question
12
Without calculating the square roots, determine which of the numbers:$a=\sqrt{7}+\sqrt{10}\;\;,\;\; b=\sqrt{3}+\sqrt{19}$ is greater.
Dec 10, 2019
question
11
Finding the smallest $\alpha>0$ for which $\exists\beta(\alpha)>0$ so that $\sqrt{1+x}+\sqrt{1-x}\le 2-\frac{x^\alpha}\beta,\forall x\in[0,1]$.
Mar 15, 2021
question
9
Solution verification:$\lim_{x\to 2}\frac{\ln(x-1)}{3^{x-2}-5^{-x+2}}$
Jan 19, 2020
question
8
Prove: Three tangents to a parabola form a triangle with an orthocenter on the directrix and a circumcircle passing through the focus
Jun 1, 2020
question
7
Finding $\lim_{n\to\infty}{\frac{n}{a^{n+1}}\left(a+\frac{a^2}{2}+\frac{a^3}{3}+\cdots+\frac{a^n}{n}\right)}$ where $a>1$
Nov 28, 2019
question
6
Languages, students, interpretation of $AA^{\tau}\;\&\;A^{\tau}A$
Jan 11, 2020
question
6
Show $A$ is Hermitian and find the orthonormal basis for $V$ in which $A$ is diagonalizable.
May 28, 2020
question
6
Oscillation of the function at each point
Mar 9
answer
5
Analysis, limit of $(3n)!/(n!)^3$
Feb 29, 2020
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18
Matrix in Latex
9
How did Smurfette know her origins in "The Smurfs" (2011) and then, suddenly, she learns Gargamel is her creator in "The Smurfs 2" (2013)?

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