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inequality
ehuseyinyigit   3
N an hour ago by ehuseyinyigit
Source: Nice
For all positive real numbers $a,b$ and $c$, prove
$$\sum_{cyc}{\dfrac{1}{b\left(a^4+a^3c+b^2c^2\right)}}\geq \dfrac{27}{(a+b+c)(a^2+b^2+c^2)^2}$$
3 replies
ehuseyinyigit
Feb 3, 2025
ehuseyinyigit
an hour ago
k Happy 1795^2 day
maxamc   2
N Yesterday at 12:42 PM by cheltstudent
$30222025=1795^2$.

$3^2$ states are taking mathcounts state and $1^2$ territories are taking mathcounts state ($6^2$, $2^2$ national qualifiers each).

$5^2$ perfect square dates this century, $5$ this year.
2 replies
maxamc
Yesterday at 12:02 PM
cheltstudent
Yesterday at 12:42 PM
k AMC 12a 2024 Problems and Solutions Pages Misaligned?
ViolinGod   5
N Friday at 9:10 PM by jlacosta
I was looking at the past AMC problems and it seems like the problems listed on this page:

https://artofproblemsolving.com/wiki/index.php/2024_AMC_12A_Problems

have solution links that do not all correspond to the correct problem. For example, for problem 2, the solution page is linked as:

https://artofproblemsolving.com/wiki/index.php/2024_AMC_12A_Problems/Problem_2, but in the first link the problems are different.
5 replies
ViolinGod
Mar 21, 2025
jlacosta
Friday at 9:10 PM
k Number of posts is not consistent
LawofCosine   3
N Mar 21, 2025 by LawofCosine
The number of posts is not consistent. see attachments. Thank you.
3 replies
LawofCosine
Mar 21, 2025
LawofCosine
Mar 21, 2025
k How to add members to forums?
Bnn81351   2
N Mar 20, 2025 by Craftybutterfly
How do I add members to forums?
2 replies
Bnn81351
Mar 20, 2025
Craftybutterfly
Mar 20, 2025
k AoPS Academy: Exporting rich format results in broken BBCode.
Minium   1
N Mar 19, 2025 by jlacosta
When exporting a rich format document in the writing tab into the message board, bold formatting specifically is broken and results in broken BBCode.
Page URL: virtual.aopsacademy.org/class/<any writing class works here>/writing

TO REPRODUCE
1. enter "Lorem ipsum".
2. apply bold to "Lorem"
3. apply italic to "ip".
4. click the Post Draft on Message Board
5. read the contents of the message board post.

FOR EXAMPLE
When I format "Lorem ipsum" (in the writing tab of course), but when I export to post it, I get

[code]Lorem[/b] ipsum[/code].

Notice that the first bolding does not start, only ends.
1 reply
Minium
Mar 18, 2025
jlacosta
Mar 19, 2025
k How to report tags
Craftybutterfly   6
N Mar 19, 2025 by Demetri
Not sure if this belongs in site support but how do you report tags for topics? I recently noticed in one of the topics I made on site support had really weird tags.
6 replies
Craftybutterfly
Mar 19, 2025
Demetri
Mar 19, 2025
delete tag
o.k.oo   5
N Mar 19, 2025 by Zestra
The tag section for the question I shared is deleted after a while. What should not be done? Thanks.
5 replies
o.k.oo
Mar 18, 2025
Zestra
Mar 19, 2025
Rating Up Not Occuring
CatsRule222   2
N Mar 19, 2025 by aidan0626
Bug: In the state round, I answered 10 questions correctly without the rating changing at all (rating 43 currently) in the other rounds, it always works.
URL: https://artofproblemsolving.com/mathcounts_trainer/play
How to Recreate:
1. Get to mathcounts trainer rating 43 on state round, and it will glitch.
2 replies
CatsRule222
Mar 19, 2025
aidan0626
Mar 19, 2025
k Pressing &#039;go down button&#039; always creates a gray box on the last post
Craftybutterfly   18
N Mar 18, 2025 by jlacosta
Summary of the problem: Pressing go down to last post button always creates a gray box overlapping last post
Page URL: any forum
Steps to reproduce:
1. Go to any topic in a forum
2. The gray box at the bottom overlaps part of the first post
Expected behavior: Should not show a gray box
Frequency: 100% of the time
Operating system(s): Linux HP EliteBook 835 G8 Notebook PC
Browser(s), including version: Chrome 133.0.6943.142 (Official Build) (64-bit) (cohort: Stable)
Additional information: It works on any other device, on my iPhone XR, a MacOS, and my iPad. Took the screenshot a month ago. The gray box still appears
18 replies
Craftybutterfly
Mar 12, 2025
jlacosta
Mar 18, 2025
k The My classes tab shows cyan even though im on community
Craftybutterfly   10
N Mar 18, 2025 by jlacosta
Summary of the problem: The My classes tab shows cyan even though I'm on community. Notice the tabs next to the AoPS Online words.
Page URL: artofproblemsolving.com/community
Steps to reproduce:
1. Press on my classes next to the AoPS Online
2. Then press on community tab
Expected behavior: My Classes tab should be dark blue
Frequency: 100%
Operating system(s): HP EliteBook 835 G8 Notebook PC
Browser(s), including version: Chrome: 134.0.6998.89 (Official Build) (64-bit) (cohort: Stable)
Additional information: It happens on this specific computer only.
10 replies
Craftybutterfly
Mar 17, 2025
jlacosta
Mar 18, 2025
Inequality
srnjbr   1
N Yesterday at 2:58 AM by sqing
a^2+b^2+c^2+x^2+y^2=1. Find the maximum value of the expression (ax+by)^2+(bx+cy)^2
1 reply
srnjbr
Mar 21, 2025
sqing
Yesterday at 2:58 AM
Inequality
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srnjbr
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a^2+b^2+c^2+x^2+y^2=1. Find the maximum value of the expression (ax+by)^2+(bx+cy)^2
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sqing
41195 posts
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srnjbr wrote:
a^2+b^2+c^2+x^2+y^2=1. Find the maximum value of the expression (ax+by)^2+(bx+cy)^2
2015 Korean
This post has been edited 1 time. Last edited by sqing, Yesterday at 2:59 AM
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