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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
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Introducing myself at AoPS, and what's your magic wand?
asuth_asuth   1163
N 32 minutes ago by LostInBali
Hi!

I'm Andrew Sutherland. I'm the new Chief Product Officer at AoPS. As you may have read, Richard is retiring and Ben Kornell and I are working together to lead the company now. I'm leading all the software and digital stuff at AoPS. I just wanted to say hello and introduce myself! I'm really excited to be part of the special community that is AoPS.

Previously, I founded Quizlet as a 15-year-old high school student. I did Course 6 at MIT and then left to lead Quizlet full-time for a total of 14 years. I took a few years off and now I'm doing AoPS! I wrote more about all that on my blog: https://asuth.com/im-joining-aops

I have a question for all of you. If you could wave a magic wand, and change anything about AoPS, what would it be? All suggestions welcome! Thank you.
1163 replies
asuth_asuth
Mar 30, 2025
LostInBali
32 minutes ago
J
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strong polinom
FFA21   0
5 hours ago
Source: OSSM Comp'25 P2 (HSE IMC qualification)
A polynomial will be called 'strong' if it can be represented as a product of two non-constant polynomials with real non-negative coefficients.
Prove that:
$\exists n$ that $p(x^n)$ 'strong' and $deg(p)>1$ $\implies$ $p(x)$ 'strong'
0 replies
FFA21
5 hours ago
0 replies
J
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integrals
FFA21   0
5 hours ago
Source: OSSM Comp'25 P1 (HSE IMC qualification)
Find all continuous functions $f:[1,8]\to R$ that:
$\int_1^2f(t^3)^2dt+2\int_1^2sin(t)f(t^3)dt=\frac{2}{3}\int_1^8f(t)dt-\int_1^2(t^2-sin(t))^2dt$
0 replies
FFA21
5 hours ago
0 replies
J
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Mathematical expectation 1
Tricky123   4
N 6 hours ago by solyaris
X is continuous random variable having spectrum
$(-\infty,\infty) $ and the distribution function is $F(x)$ then
$E(X)=\int_{0}^{\infty}(1-F(x)-F(-x))dx$ and find the expression of $V(x)$

Ans:- $V(x)=\int_{0}^{\infty}(2x(1-F(x)+F(-x))dx-m^{2}$

How to solve help me
4 replies
Tricky123
May 11, 2025
solyaris
6 hours ago
J
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Prove the statement
Butterfly   5
N 6 hours ago by solyaris
Given an infinite sequence $\{x_n\} \subseteq [0,1]$, there exists some constant $C$, for any $r>0$, among the sequence $x_n$ and $x_m$ could be chosen to satisfy $|n-m|\ge r $ and $|x_n-x_m|<\frac{C}{|n-m|}$.
5 replies
Butterfly
May 7, 2025
solyaris
6 hours ago
J
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B.Math 2008-Integration .
mynamearzo   14
N Yesterday at 4:02 PM by Levieee
Source: 10+2
Let $f:\mathbb{R} \to \mathbb{R}$ be a continuous function . Suppose
\[f(x)=\frac{1}{t} \int^t_0 (f(x+y)-f(y))\,dy\]
$\forall x\in \mathbb{R}$ and all $t>0$ . Then show that there exists a constant $c$ such that $f(x)=cx\ \forall x$
14 replies
mynamearzo
Apr 16, 2012
Levieee
Yesterday at 4:02 PM
J
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uniformly continuous of multivariable function
keroro902   1
N Yesterday at 1:42 PM by Mathzeus1024
How can I determine which of the following functions are uniformly continuous on the given domain A?

$f \left( x, y \right) = \frac{x^3 + y^2}{x^2 + y}$ , $A = \left\{ \left( x, y \right) \in \mathbb m{R}^2 \left| \right. \left| y \right| \leq \frac{x^2}{2} %Error. "nocomma" is a bad command. , x^2 + y^2 < 1 \right\}$

$g \left( x, y \right) = \frac{y^2 + 4 x^2}{y^2 - 4 x^2 - 1}$, $A = \left\{ \left( x, y \right) \in \mathbb m{R}^2 \left| 0 \leq x^2 - y^2 \leqslant 1 \right\} \right.$
1 reply
keroro902
Nov 2, 2012
Mathzeus1024
Yesterday at 1:42 PM
J
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Investigating functions
mikejoe   1
N Yesterday at 1:08 PM by Mathzeus1024
Source: Edwards and Penney
Investigate the function $f(x) = (x-2) \sqrt{x+1}$
Also determine its domain and range.
1 reply
mikejoe
Nov 2, 2012
Mathzeus1024
Yesterday at 1:08 PM
J
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functional equation
pratyush   2
N Yesterday at 12:41 PM by Mathzeus1024
For the functional equation $f(x-y)=\frac{f(x)}{f(y)}$, if f ' (0)=p and f ' (5)=q, then prove f ' (-5) = q
2 replies
pratyush
Apr 4, 2014
Mathzeus1024
Yesterday at 12:41 PM
J
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ISI UGB 2025 P1
SomeonecoolLovesMaths   7
N Yesterday at 12:28 PM by SatisfiedMagma
Source: ISI UGB 2025 P1
Suppose $f \colon \mathbb{R} \longrightarrow \mathbb{R}$ is differentiable and $| f'(x)| < \frac{1}{2}$ for all $x \in \mathbb{R}$. Show that for some $x_0 \in \mathbb{R}$, $f \left( x_0 \right) = x_0$.
7 replies
SomeonecoolLovesMaths
May 11, 2025
SatisfiedMagma
Yesterday at 12:28 PM
J
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UMich Math
missionsqhc   1
N Yesterday at 9:27 AM by Mathzeus1024
I was recently accepted into the University of Michigan as a math major. If anyone studies math at UMich or knows anything about the program, could you share your experience? How would you rate the program? I know UMich is well-regarded for math (among many other things) but from my understanding, it is not quite at the level of an MIT or CalTech. What math programs is it comparable to? How does the rigor of the curricula compare to other top math programs? What are the other students like—is there a thriving contest math community? How accessible are research opportunities and graduate-level classes? Are most students looking to get into pure math and become research mathematicians or are most people focused on applied fields?

Also, aside from the math program, how is UMich overall? What were the advantages and disadvantages from being at such a large school? I was admitted to the Residential College (RC) within the College of Literature, Science, and the Arts. This is supposed to emulate a liberal arts college (while still allowing me access to the resources of a major research university). Could anyone speak on the RC?

How academically-inclined are UMich students? I’ve heard the school is big on sports and school spirit. I am just concerned that there may be a lot of subpar in-state students. How is the climate of Ann Arbor and how is the city in general?

Finally, how is UMich generally regarded? I’m also considering Georgetown. Am I right in viewing the latter as more well-regarded for humanities and the former better-known for STEM?
1 reply
missionsqhc
Tuesday at 4:31 PM
Mathzeus1024
Yesterday at 9:27 AM
J
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k Glitch or Bug?
awesometriangles   5
N Yesterday at 4:18 AM by Craftybutterfly
I was asking for some $\LaTeX$ help in one of my classrooms, and one of the Halpers posted. Is this a glitch or a bug(see screenshot)?


It seems as though I can edit their post...
5 replies
awesometriangles
Yesterday at 1:08 AM
Craftybutterfly
Yesterday at 4:18 AM
J
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k Deleting collections
Sadigly   1
N May 12, 2025 by jlacosta
How to delete some collections? I accidently created 2 same collections, and one of them is useless
1 reply
Sadigly
May 11, 2025
jlacosta
May 12, 2025
J
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k Alcumus Reset
greenplanet2050   7
N May 12, 2025 by jlacosta
I want to reset my Alcumus but it says "You cannot reset your Alcumus data while you are in current AoPS classes."

But I don't have any ongoing AoPs classes and my last class Precalculus already ended.
7 replies
greenplanet2050
May 10, 2025
jlacosta
May 12, 2025
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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
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Getting access to a class page longer
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redelephant876
5228 posts
redelephant876
#1 h  Mar 27, 2024, 3:07 PM
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
3030 posts
MrMustache
#2 h  Mar 27, 2024, 3:31 PM • 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
redelephant876
#3 h  Mar 27, 2024, 3:33 PM
Y by
Ah, perfect! Thank you!
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