Stay ahead of learning milestones! Enroll in a class over the summer!

Site Support Tech support and questions about AoPS classes and materials
Tech support and questions about AoPS classes and materials
3 M G
BBookmark  VNew Topic kLocked
Site Support Tech support and questions about AoPS classes and materials
Tech support and questions about AoPS classes and materials
3 M G
BBookmark  VNew Topic kLocked
G
Topic
First Poster
Last Poster
k a May Highlights and 2025 AoPS Online Class Information
jlacosta   0
19 minutes ago
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.

Introductory: Grades 5-10

Prealgebra 1 Self-Paced

Prealgebra 1
Tuesday, May 13 - Aug 26
Thursday, May 29 - Sep 11
Sunday, Jun 15 - Oct 12
Monday, Jun 30 - Oct 20
Wednesday, Jul 16 - Oct 29

Prealgebra 2 Self-Paced

Prealgebra 2
Wednesday, May 7 - Aug 20
Monday, Jun 2 - Sep 22
Sunday, Jun 29 - Oct 26
Friday, Jul 25 - Nov 21

Introduction to Algebra A Self-Paced

Introduction to Algebra A
Sunday, May 11 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Wednesday, May 14 - Aug 27
Friday, May 30 - Sep 26
Monday, Jun 2 - Sep 22
Sunday, Jun 15 - Oct 12
Thursday, Jun 26 - Oct 9
Tuesday, Jul 15 - Oct 28

Introduction to Counting & Probability Self-Paced

Introduction to Counting & Probability
Thursday, May 15 - Jul 31
Sunday, Jun 1 - Aug 24
Thursday, Jun 12 - Aug 28
Wednesday, Jul 9 - Sep 24
Sunday, Jul 27 - Oct 19

Introduction to Number Theory
Friday, May 9 - Aug 1
Wednesday, May 21 - Aug 6
Monday, Jun 9 - Aug 25
Sunday, Jun 15 - Sep 14
Tuesday, Jul 15 - Sep 30

Introduction to Algebra B Self-Paced

Introduction to Algebra B
Tuesday, May 6 - Aug 19
Wednesday, Jun 4 - Sep 17
Sunday, Jun 22 - Oct 19
Friday, Jul 18 - Nov 14

Introduction to Geometry
Sunday, May 11 - Nov 9
Tuesday, May 20 - Oct 28
Monday, Jun 16 - Dec 8
Friday, Jun 20 - Jan 9
Sunday, Jun 29 - Jan 11
Monday, Jul 14 - Jan 19

Paradoxes and Infinity
Mon, Tue, Wed, & Thurs, Jul 14 - Jul 16 (meets every day of the week!)

Intermediate: Grades 8-12

Intermediate Algebra
Sunday, Jun 1 - Nov 23
Tuesday, Jun 10 - Nov 18
Wednesday, Jun 25 - Dec 10
Sunday, Jul 13 - Jan 18
Thursday, Jul 24 - Jan 22

Intermediate Counting & Probability
Wednesday, May 21 - Sep 17
Sunday, Jun 22 - Nov 2

Intermediate Number Theory
Sunday, Jun 1 - Aug 24
Wednesday, Jun 18 - Sep 3

Precalculus
Friday, May 16 - Oct 24
Sunday, Jun 1 - Nov 9
Monday, Jun 30 - Dec 8

Advanced: Grades 9-12

Olympiad Geometry
Tuesday, Jun 10 - Aug 26

Calculus
Tuesday, May 27 - Nov 11
Wednesday, Jun 25 - Dec 17

Group Theory
Thursday, Jun 12 - Sep 11

Contest Preparation: Grades 6-12

MATHCOUNTS/AMC 8 Basics
Friday, May 23 - Aug 15
Monday, Jun 2 - Aug 18
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

MATHCOUNTS/AMC 8 Advanced
Sunday, May 11 - Aug 10
Tuesday, May 27 - Aug 12
Wednesday, Jun 11 - Aug 27
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

AMC 10 Problem Series
Friday, May 9 - Aug 1
Sunday, Jun 1 - Aug 24
Thursday, Jun 12 - Aug 28
Tuesday, Jun 17 - Sep 2
Sunday, Jun 22 - Sep 21 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Monday, Jun 23 - Sep 15
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

AMC 10 Final Fives
Sunday, May 11 - Jun 8
Tuesday, May 27 - Jun 17
Monday, Jun 30 - Jul 21

AMC 12 Problem Series
Tuesday, May 27 - Aug 12
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Wednesday, Aug 6 - Oct 22

AMC 12 Final Fives
Sunday, May 18 - Jun 15

AIME Problem Series A
Thursday, May 22 - Jul 31

AIME Problem Series B
Sunday, Jun 22 - Sep 21

F=ma Problem Series
Wednesday, Jun 11 - Aug 27

WOOT Programs
Visit the pages linked for full schedule details for each of these programs!


MathWOOT Level 1
MathWOOT Level 2
ChemWOOT
CodeWOOT
PhysicsWOOT

Programming

Introduction to Programming with Python
Thursday, May 22 - Aug 7
Sunday, Jun 15 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Tuesday, Jun 17 - Sep 2
Monday, Jun 30 - Sep 22

Intermediate Programming with Python
Sunday, Jun 1 - Aug 24
Monday, Jun 30 - Sep 22

USACO Bronze Problem Series
Tuesday, May 13 - Jul 29
Sunday, Jun 22 - Sep 1

Physics

Introduction to Physics
Wednesday, May 21 - Aug 6
Sunday, Jun 15 - Sep 14
Monday, Jun 23 - Sep 15

Physics 1: Mechanics
Thursday, May 22 - Oct 30
Monday, Jun 23 - Dec 15

Relativity
Mon, Tue, Wed & Thurs, Jun 23 - Jun 26 (meets every day of the week!)
0 replies
jlacosta
19 minutes ago
0 replies
Cannot post PHP
char0221   4
N an hour ago by Elephant200
Summary of the problem: If I try to post anything with PHP (a coding language), it
Page URL: In any forum or private messages
Steps to reproduce:
1. Create a post.
2. Put some PHP inside, can't give example
Expected behavior: Should post the message
Frequency: 100%
Operating system(s): macOS Sequoia 15.2.1
Browser(s), including version: Safari
Additional information: See attachments
4 replies
char0221
Yesterday at 1:23 AM
Elephant200
an hour ago
If it is an integer then perfect square
Ecrin_eren   0
3 hours ago


"Let a, b, c, d be non-zero digits, and let abcd and dcba represent four-digit numbers.

Show that if the number abcd / dcba is an integer, then that integer is a perfect square."



0 replies
Ecrin_eren
3 hours ago
0 replies
Sum of arctan
Ecrin_eren   1
N 3 hours ago by Shan3t


Find the value of the sum:
sum from n = 0 to infinity of arctan(k / (n² + kn + 1))


1 reply
Ecrin_eren
3 hours ago
Shan3t
3 hours ago
Inequality
Ecrin_eren   0
3 hours ago


Let a, b, c be positive real numbers. Prove the inequality:

sqrt(a² - ab + b²) + sqrt(b² - bc + c²) ≥ sqrt(a² + ac + c²)



0 replies
Ecrin_eren
3 hours ago
0 replies
Rely box disappearing
Craftybutterfly   11
N 3 hours ago by Craftybutterfly
For some reason, on my iPhone XR, when I press on the view my posts button, then press on an unlocked topic and scroll down or press go down button, the reply box disappears. I can’t use the proper format right now as I am on phone.
11 replies
Craftybutterfly
Yesterday at 3:12 PM
Craftybutterfly
3 hours ago
Cool vieta sum
Kempu33334   6
N 5 hours ago by Lankou
Let the roots of \[\mathcal{P}(x) = x^{108}+x^{102}+x^{96}+2x^{54}+3x^{36}+4x^{24}+5x^{18}+6\]be $r_1, r_2, \dots, r_{108}$. Find \[\dfrac{r_1^6+r_2^6+\dots+r_{108}^6}{r_1^6r_2^6+r_1^6r_3^6+\dots+r_{107}^6r_{108}^6}\]without Newton Sums.
6 replies
Kempu33334
Yesterday at 11:44 PM
Lankou
5 hours ago
đề hsg toán
akquysimpgenyabikho   3
N 6 hours ago by Lankou
làm ơn giúp tôi giải đề hsg

3 replies
akquysimpgenyabikho
Apr 27, 2025
Lankou
6 hours ago
A problem with a rectangle
Raul_S_Baz   13
N Today at 4:38 PM by undefined-NaN
On the sides AB and AD of the rectangle ABCD, points M and N are taken such that MB = ND. Let P be the intersection of BN and CD, and Q be the intersection of DM and CB. How can we prove that PQ || MN?
IMAGE
13 replies
Raul_S_Baz
Apr 26, 2025
undefined-NaN
Today at 4:38 PM
k Side Panel UI Glitch
MathPerson12321   3
N Today at 3:58 PM by Demetri
Ill add more detail soon but on the side panel with the global feed, my feeds, private messages, and bookmarked threads/forums, the 2nd and 4th one I just mentioned are glitched. The 2nd one has the settings icon and then a music icon, and the 4th has an aops mini cube, the share button, and another that I don't know what it is.
Private messages are also being weird as the right panel with the edit button for example is offset.
3 replies
MathPerson12321
Today at 3:45 PM
Demetri
Today at 3:58 PM
Introducing myself at AoPS, and what's your magic wand?
asuth_asuth   1042
N Today at 2:07 PM by CoolBroCubby
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.
1042 replies
asuth_asuth
Mar 30, 2025
CoolBroCubby
Today at 2:07 PM
Find the domain and range of $f(x)=2-|x-5|.$
Vulch   1
N Today at 12:13 PM by Mathzeus1024
Find the domain and range of $f(x)=2-|x-5|.$
1 reply
Vulch
Today at 2:07 AM
Mathzeus1024
Today at 12:13 PM
nice problem
teomihai   1
N Today at 11:58 AM by Royal_mhyasd
Let set $A =\{0,1,2,3,...,n\}$ , where $n$ it is positiv ,integer number.
How many subsets of A contain at least one odd number?
1 reply
teomihai
Today at 11:46 AM
Royal_mhyasd
Today at 11:58 AM
(14n+25)/(2n+1) 'is a perfect square - Portugal OPM 2017 p1
parmenides51   4
N Today at 10:03 AM by Namisgood
Determine all integer values of n for which the number $\frac{14n+25}{2n+1}$ 'is a perfect square.
4 replies
parmenides51
May 15, 2024
Namisgood
Today at 10:03 AM
Inequalities
sqing   4
N Today at 9:46 AM by sqing
Let $ a,b,c>0 . $ Prove that
$$ \left(1 +\frac{a}{b}\right)\left(1+\frac{b}{c}\right)\left(1+\frac{c}{a}\right )\geq 4\left(\frac{a+b}{b+c}+ \frac{b+c}{a+b}\right)$$$$ \left(1 +\frac{a}{b}\right)\left(1+\frac{b}{c}\right)\left(1+\frac{c}{a}\right )\geq \frac{32}{9}\left(\frac{a+b}{b+c}+ \frac{c+a}{a+b}\right)$$$$ \left(1 +\frac{a}{b}\right)\left(1+\frac{b}{c}\right)\left(1+\frac{c}{a}\right )\geq  \frac{8}{3}\left(  \frac{a+b}{b+c}+ \frac{b+c}{c+a}+ \frac{c+a}{a+b}\right)$$$$ \left(1 +\frac{a^2}{b^2}\right)\left(1+\frac{b^2}{c^2}\right)\left(1+\frac{c^2}{a^2}\right )\geq \frac{8}{3}\left(  \frac{a^2+bc}{b^2+ca}+\frac{b^2+ca}{c^2+ab}+\frac{c^2+ab}{a^2+bc}\right)$$
4 replies
sqing
Today at 12:20 AM
sqing
Today at 9:46 AM
k Python turtle
Speedysolver1   15
N Apr 16, 2025 by jlacosta
It gave a turtle window as seen without import turtle
print("this does not import turtle")

IMAGE
15 replies
Speedysolver1
Apr 10, 2025
jlacosta
Apr 16, 2025
Python turtle
G H J
G H BBookmark kLocked kLocked NReply
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Speedysolver1
133 posts
#1
Y by
It gave a turtle window as seen without import turtle
  1. print("this does not import turtle")

https://cdn.artofproblemsolving.com/attachments/5/d/89ec62e714378f19a06d77f2a6931d1d342dcd.png
This post has been edited 3 times. Last edited by Speedysolver1, Apr 10, 2025, 8:28 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Speedysolver1
133 posts
#2
Y by
Also it doesn’t print
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Irreplaceable
1271 posts
#4
Y by
Speedysolver1 wrote:
It gave a turtle window as seen without import turtle
  1. print("this does not import turtle")
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Irreplaceable
1271 posts
#5
Y by
I fixed it you should check your keyboard if it is on INT or US
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Demetri
1337 posts
#6 • 1 Y
Y by Irreplaceable
It doesn't print because you are using tildas(`) around the string (why are you using tildas) and it imports turtle because that is how aops code is desgined. @2above fixes it for you
This post has been edited 3 times. Last edited by Demetri, Apr 10, 2025, 8:11 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Speedysolver1
133 posts
#7
Y by
I edited can reproduce
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Craftybutterfly
416 posts
#8
Y by
Try doing print('your words'). notice that I used ' instead of ". Or maybe there is something wrong with AoPS python window
This post has been edited 1 time. Last edited by Craftybutterfly, Apr 10, 2025, 8:26 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Irreplaceable
1271 posts
#9
Y by
Craftybutterfly wrote:
Try doing print('your words'). notice that I used ' instead of "

no no you can use single quotes for a print statement
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Demetri
1337 posts
#10
Y by
I edited can reproduce
The issue is resolved? It prints now, and importing turtle is intended, in fact its in the code:
if (prog.indexOf("import turtle") > -1) {
            $('#' + Sk.TurtleGraphics.target).show();
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Speedysolver1
133 posts
#11
Y by
Demetri wrote:
I edited can reproduce
The issue is resolved? It prints now, and importing turtle is intended, in fact its in the code:
if (prog.indexOf("import turtle") > -1) {
            $('#' + Sk.TurtleGraphics.target).show();

not resolved it still happens
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Speedysolver1
133 posts
#12
Y by
see the attachments
Attachments:
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Demetri
1337 posts
#13
Y by
Demetri wrote:
I edited can reproduce
The issue is resolved? It prints now, and importing turtle is intended, in fact its in the code:
if (prog.indexOf("import turtle") > -1) {
            $('#' + Sk.TurtleGraphics.target).show();

not resolved it still happens
It is resolved, it happens on purpose.
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Speedysolver1
133 posts
#14
Y by
Why does it
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Demetri
1337 posts
#15 • 2 Y
Y by Speedysolver1, InsightfulHawk16
Why does it
Aops searches for "import turtle" in the python code and if it detects that it will import it. @below you can put [RESOLVED] in the title because \req lock doesn't do much
This post has been edited 1 time. Last edited by Demetri, Apr 10, 2025, 8:43 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
bpan2021
2626 posts
#18 • 1 Y
Y by Speedysolver1
Why does it
Aops searches for "import turtle" in the python code and if it detects that it will import it. @below you can put [RESOLVED] in the title because \req lock doesn't do much

But that is not how Python is supposed to function. It's only supposed to register instances where "import turtle" is not some string, another data type, or is part of some piece of code that doesn't want to import turtle, but rather an actual import statement. If "import turtle" was not in the code as an import statement, then the turtle box should not appear.

The way that this functions is wrong and isn't accepted in Python, so it should be a bug.
This post has been edited 1 time. Last edited by bpan2021, Apr 11, 2025, 12:41 AM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
jlacosta
640 posts
#24 • 1 Y
Y by aidan0626
Thanks for reporting this! We'll pass it along.
Z Y
G
H
=
a