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k a May Highlights and 2025 AoPS Online Class Information
jlacosta   0
May 1, 2025
May is an exciting month! National MATHCOUNTS is the second week of May in Washington D.C. and our Founder, Richard Rusczyk will be presenting a seminar, Preparing Strong Math Students for College and Careers, on May 11th.

Are you interested in working towards MATHCOUNTS and don’t know where to start? We have you covered! If you have taken Prealgebra, then you are ready for MATHCOUNTS/AMC 8 Basics. Already aiming for State or National MATHCOUNTS and harder AMC 8 problems? Then our MATHCOUNTS/AMC 8 Advanced course is for you.

Summer camps are starting next month at the Virtual Campus in math and language arts that are 2 - to 4 - weeks in duration. Spaces are still available - don’t miss your chance to have an enriching summer experience. There are middle and high school competition math camps as well as Math Beasts camps that review key topics coupled with fun explorations covering areas such as graph theory (Math Beasts Camp 6), cryptography (Math Beasts Camp 7-8), and topology (Math Beasts Camp 8-9)!

Be sure to mark your calendars for the following upcoming events:
[list][*]May 9th, 4:30pm PT/7:30pm ET, Casework 2: Overwhelming Evidence — A Text Adventure, a game where participants will work together to navigate the map, solve puzzles, and win! All are welcome.
[*]May 19th, 4:30pm PT/7:30pm ET, What's Next After Beast Academy?, designed for students finishing Beast Academy and ready for Prealgebra 1.
[*]May 20th, 4:00pm PT/7:00pm ET, Mathcamp 2025 Qualifying Quiz Part 1 Math Jam, Problems 1 to 4, join the Canada/USA Mathcamp staff for this exciting Math Jam, where they discuss solutions to Problems 1 to 4 of the 2025 Mathcamp Qualifying Quiz!
[*]May 21st, 4:00pm PT/7:00pm ET, Mathcamp 2025 Qualifying Quiz Part 2 Math Jam, Problems 5 and 6, Canada/USA Mathcamp staff will discuss solutions to Problems 5 and 6 of the 2025 Mathcamp Qualifying Quiz![/list]
Our full course list for upcoming classes is below:
All classes run 7:30pm-8:45pm ET/4:30pm - 5:45pm PT unless otherwise noted.

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0 replies
jlacosta
May 1, 2025
0 replies
Minimize
lgx57   8
N an hour ago by lbh_qys
Minimize $\sqrt{\cos^2 x+(2-\sin x)^2}+\dfrac{1}{2}\sqrt{(\sqrt 3-\cos x)^2+(\sin x+1)^2}$
8 replies
lgx57
May 23, 2025
lbh_qys
an hour ago
PHP trouble
SomeonecoolLovesMaths   0
2 hours ago
We have distributed two hundred balls into one hundred boxes with the restrictions that no box got more than one hundred balls, and each box got at least one. Prove that it is possible to find some boxes that together contain exactly one hundred balls.

Although I am aware of the proof, I do not understand the part where the only partial sum $ \equiv 0 \pmod {100}$ is $200$. Can someone give some kind of a commentary on the proof?
0 replies
SomeonecoolLovesMaths
2 hours ago
0 replies
Inequalities
lgx57   3
N 2 hours ago by lbh_qys
Let $a,b,c,d,e \ge 0$,$\sum \dfrac{1}{a+4}=1$.Prove that:
$$\sum \dfrac{a}{a^2+4} \le 1$$
Let $x,y,z>0$.Prove that:
$$\sum (y+z)\sqrt{\dfrac{yz}{(z+x)(y+x)}} \ge x+y+z$$
3 replies
lgx57
Yesterday at 3:55 PM
lbh_qys
2 hours ago
Algebraic Manipulation
Darealzolt   2
N 3 hours ago by lbh_qys
It is known that \(a,b \in \mathbb{R}\) that satisfies
\[
a^3+b^3=1957
\]\[
(a+b)(a+1)(b+1)=2014
\]Hence, find the value of \(a+b\)
2 replies
Darealzolt
Today at 4:01 AM
lbh_qys
3 hours ago
Writing problem grade and color
bogowogo163   0
3 hours ago
Could anyone give me some information about how the writing problem grades affect the color bar (specifically the writing problem bar) in the Report tab? I have absolutely no idea about this
0 replies
bogowogo163
3 hours ago
0 replies
Inequalities
sqing   9
N 3 hours ago by sqing
Let $ a,b> 0 , \frac{a}{b^2}+\frac{b}{a^2}+\frac{56}{(a+b)^2} \leq 16.$ Prove that
$$ab(a+b) \geq 2$$Let $ a,b> 0 ,\frac{1}{a^2}+\frac{1}{b^2}+\frac{28}{(a+b)^2} \leq 9.$ Prove that
$$ab(a+b) \geq 2$$
9 replies
sqing
May 25, 2025
sqing
3 hours ago
rare creative geo problem spotted in the wild
abbominable_sn0wman   3
N 5 hours ago by jasperE3
The following is the construction of the twindragon fractal.

Let $I_0$ be the solid square region with vertices at
\[
(0, 0), \left(\frac{1}{2}, \frac{1}{2}\right), (1, 0), \left(\frac{1}{2}, -\frac{1}{2}\right).
\]
Recursively, the region $I_{n+1}$ consists of two copies of $I_n$: one copy which is rotated $45^\circ$ counterclockwise around the origin and scaled by a factor of $\frac{1}{\sqrt{2}}$, and another copy which is also rotated $45^\circ$ counterclockwise around the origin and scaled by a factor of $\frac{1}{\sqrt{2}}$, and then translated by $\left(\frac{1}{2}, -\frac{1}{2}\right)$.

We have displayed $I_0$ and $I_1$ below.

Let $I_\infty$ be the limiting region of the sequence $I_0, I_1, \dots$.

The area of the smallest convex polygon which encloses $I_\infty$ can be written as $\frac{a}{b}$ for relatively prime positive integers $a$ and $b$. Find $a + b$.
3 replies
abbominable_sn0wman
Yesterday at 6:04 PM
jasperE3
5 hours ago
Aops wiki problem
EaZ_Shadow   4
N 5 hours ago by Craftybutterfly
Its lagging so hard.... its not even loading for me...
4 replies
EaZ_Shadow
Yesterday at 9:19 PM
Craftybutterfly
5 hours ago
Find the number of ordered triples (p,q,r)
Darealzolt   3
N Today at 4:52 AM by ohiorizzler1434
Let \(p,q,r\) be prime numbers such that
\[
\frac{1}{pq}+\frac{1}{qr}+\frac{1}{pr}=\frac{1}{839}
\]Hence find the numbers of ordered triples \(\{p,q,r\}\)
3 replies
Darealzolt
Yesterday at 1:52 PM
ohiorizzler1434
Today at 4:52 AM
Great Geometry with Squares on sides of triangles
SomeonecoolLovesMaths   4
N Today at 4:50 AM by ohiorizzler1434
Three squares are drawn on the sides of triangle \(ABC\) (i.e., the square on \(AB\) has \(AB\) as one of its sides and lies outside \(ABC\)). Show that the lines drawn from the vertices \(A\), \(B\), and \(C\) to the centers of the opposite squares are concurrent.

IMAGE
4 replies
SomeonecoolLovesMaths
May 22, 2025
ohiorizzler1434
Today at 4:50 AM
Vieta Substitution
Darealzolt   0
Today at 3:42 AM
Let \(\alpha,\beta,\gamma,\delta\) be the roots of the equation \(x^4-3x^3+6x^2+5x-25\). Hence, find the value of \(Z\) if
\[
Z=\frac{\alpha+\beta+\gamma+\delta}{\alpha(\beta+\gamma+\delta)+\beta(\gamma+\delta)}+\alpha\beta\gamma\delta[\alpha\beta(\gamma+\delta)+\gamma\delta(\alpha+\beta)]
\]
0 replies
Darealzolt
Today at 3:42 AM
0 replies
Floor Function Series
Darealzolt   2
N Today at 3:31 AM by pieMax2713
Let \( \lfloor x \rfloor \) denote the greatest integer less than or equal to \(x\). Hence find the value of \(M\), if
\[
M = \left\lfloor \frac{1^2}{3} \right\rfloor + \left\lfloor \frac{2^2}{3}  \right\rfloor + \left\lfloor \frac{3^2}{3}  \right\rfloor + \dots + \left\lfloor \frac{39^2}{3}  \right\rfloor + \left\lfloor \frac{40^2}{3}  \right\rfloor
\]
2 replies
Darealzolt
Today at 3:20 AM
pieMax2713
Today at 3:31 AM
what??????????????????????
Iced_Coffee   8
N Yesterday at 9:45 PM by Iced_Coffee
my "my topics" symbol (the little person looking button) and my "bookmarked topics" symbol keep randomly changing to different symbols!!!!!!!! What is happening? the 'my topics' one changed so it looked like it had a gear and a music note and I don't even know what the other one was. this has been happening for two or three days now is it happening to anyone else? please help! :what?:
8 replies
Iced_Coffee
Apr 11, 2025
Iced_Coffee
Yesterday at 9:45 PM
alcumus has reset
Kricket21   5
N Yesterday at 7:00 PM by Kricket21
A lot of my alcumus progress has been reset. What should I do? It has been almost a month. Should I just redo it all or is there a way that this can be fixed?
5 replies
Kricket21
Yesterday at 5:14 PM
Kricket21
Yesterday at 7:00 PM
k Getting access to a class page longer
redelephant876   2
N Mar 27, 2024 by redelephant876
Howdy!

I'm in Calculus 3556. I remember seeing something that said if I email someone, I can ask for longer access to the course page? I would like to have the materials from class up until I take the AP Exam in mid May. I'm assuming I would need to email Student Services? Would that be studentservices@aops.com?

Thanks!
2 replies
redelephant876
Mar 27, 2024
redelephant876
Mar 27, 2024
Getting access to a class page longer
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redelephant876
5228 posts
#1
Y by
Howdy!

I'm in Calculus 3556. I remember seeing something that said if I email someone, I can ask for longer access to the course page? I would like to have the materials from class up until I take the AP Exam in mid May. I'm assuming I would need to email Student Services? Would that be studentservices@aops.com?

Thanks!
Z Y
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MrMustache
3089 posts
#2 • 1 Y
Y by WizardOfChess2011
Howdy!

You can definitely ask for that. Although student services is the right place, you're missing a dash: the correct email is student-services@aops.com. I would also add in classes@aops.com just in case. Good luck on the AP!
Z Y
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redelephant876
5228 posts
#3
Y by
Ah, perfect! Thank you!
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