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Mathematics
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hellofriends
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I like geometry, calculus and physics

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question
18
Can there be a multiplicative linear operator for real square matrices?
May 17, 2024
question
13
Can we prove $\lim _{x\to0}\frac{\sin x}x=1$ with a functional definition for $\sin(x)$?
Mar 19, 2022
question
11
Find all the ordered triples of positive integers $(a,b,c)$ such that $b^c = 17+8^a$
Jul 11, 2024
question
11
Sangaku: to prove one of the intangents is parallel to $BC$
Nov 27, 2020
answer
10
How might I figure out the $n$th term, and the general Maclaurin/Taylor series, for $\sin^3 x$?
May 6, 2023
question
9
Show that U,V and H are colinear
Jan 28, 2022
question
8
Equilateral triangle and very peculiar inscribed tangent circles
Jan 6, 2022
question
7
Find all strictly monotone $f:(0,+\infty) \to (0, +\infty)$ such that $f(\frac{x^2}{f(x)})=x.$
May 5, 2020
question
7
Show that $M$ is the midpoint of $JI$
Sep 6, 2023
question
7
Showing $\sum_{cyc}\frac{\cos^2A}{1+\cos A} \geq \frac12$ for acute $\triangle ABC$ [duplicate]
Aug 1, 2024

Top network posts

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9
Shouldn't this est be a sunt in this sentence?
9
I can't find a nice literal translation for "Stella caeli exstirpavit"
8
On the case of "patientia nostra" in Cicero
7
Why the upper section falls faster than the bottom section when the line is cut?
6
About the spiritual soul: can animals apprehend universals?