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hellofriends
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I like geometry, calculus and physics

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Top posts
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18
Can there be a multiplicative linear operator for real square matrices?
May 17
13
Can we prove $\lim _{x\to0}\frac{\sin x}x=1$ with a functional definition for $\sin(x)$?
Mar 19, 2022
11
Sangaku: to prove one of the intangents is parallel to $BC$
Nov 27, 2020
9
How might I figure out the $n$th term, and the general Maclaurin/Taylor series, for $\sin^3 x$?
May 6, 2023
9
Show that U,V and H are colinear
Jan 28, 2022
7
Find all strictly monotone $f:(0,+\infty) \to (0, +\infty)$ such that $f(\frac{x^2}{f(x)})=x.$
May 5, 2020
7
Show that $M$ is the midpoint of $JI$
Sep 6, 2023
7
Equilateral triangle and very peculiar inscribed tangent circles
Jan 6, 2022
6
Prove that points $C,D,E,F,K,H$ lie on an ellipse
Feb 8, 2023
6
Show that $\angle PAB = \angle CAQ$
Nov 30, 2020
Top network posts
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9
Shouldn't this est be a sunt in this sentence?
8
On the case of "patientia nostra" in Cicero
8
I can't find a nice literal translation for "Stella caelis exstirpavit"
6
Shouldn't this *illis* be in the genitive *illorum* in here?
5
"Claudius pullos sacros in aquam mersit ut biberent, quoniam esse nollent"