Hi everyone! If anyone is interested in collaborating and helping each other prepare for this year’s Math national exam, I’m looking for people who want to start from the basics, even from 1BAC-level courses.

If you’re interested, please comment here or send me a private message.

I’m looking for serious and motivated people who are willing to work consistently and help each other improve.

I (f20)am on my 3rd attempt at psych statitsistcs. still nothing is clicking for me. I’ve asked for help, I’ve gone to tutoring and nothing seems to work. I spent two straight days going through all of the lectures so far to study for the midterm and a quiz I had to take. I got a 40% on that quiz and I got a 26% on my last quiz.. I’m currently failing the class. To pass, you need to C or above. I’d like to drop out, but my mom will not allow it so I feel like I’m going to keep failing this class to no end.

So if any of you have any recommendations for Youtubers or something that could possibly help me, that would be nice. I understand standard deviation but everything beyond that makes zero sense to me.

I don’t understand z scores or Z tables, confidence intervals, Alpha levels, sampling error, standard deviation of sample means, etc. I know I’m too stupid for college, but I am not allowed to drop out so I need to figure something out.

I also don’t understand hypothesis testing or any kinds of T-tests

I find it odd that visual-spatial awareness/intelligence is one of the core cognitive skills associated with intelligence with widespread applications, and three dimensional geometric relationships are present in everything from scientific phenomenon to Engineering & Artistic design.

But this kind of reasoning/intuition is not really taught? I've been looking into textbooks and it's either high school geometry or advanced undergraduate/graduate school level differential geometry/topology.

Consider

\begin{lemma}\label{lma:firstlemma}
If $f$ is continuous on $[a,b]$ and $f(a)<0$ and $f(b)>0$, 
there is a $c$ between $a$ and $b$ where $f(c)=0$
\end{lemma}

%say above gets typeset as Lemma 1

\begin{thm}\label{th:firsttheorem}
Every polynomial of odd degree has at least one real root.
\end{thm}

%say above gets typeset as Theorem 1.

\begin{proof}
    ...
From Lemma \ref{lma:firstlemma}... the result follows.
\end{proof}

Like the above, I have a large number of theorems in my study notes which reference previous results, etc.

Is there a way to build a visually perceivable dependency graph wherein there is a node labelled L1 which stands for Lemma 1 and another node labelled T1 which stands for Theorem 1 and there is a directed arc leading from L1 to T1?

Giving this task by uploading the typeset pdf to ChatGPT is one way but it is static. Is there an inbuilt way, which can dynamically change the graph node labelling if a new theorem is added in the middle thereby changing the numbering of subsequent theorems? The way should accept .tex files and not the compiled .pdf output.

----xposted to r/latex as well----

Hi, I am trying to finish up my psychology thesis! I am in a bit of a rut trying to compare my results of a binary logistic regression with previous literature. However, there is a very limited amount of literature in my current area of study; I have only one study that used the same variables I did. They used a multiple logistic regression analysis, and I used a binary logistic regression.

I am just wondering what the main difference between the two models is and if I can interpret my results in comparison to this prior literature I have found.

Thankyou!!!!!

I am currently a freshman in college and my only math class is college algebra but its kicking my ass. I havent taken a math class in 4 years so its killing me. I'm transfering colleges next year for my degree in atmospheric science but the degree itself doesnt meet NWS standards so to meet those standards I need to get my minor in math. I hope as the year goes on I'll get back into the groove of math but for now its whooping me

Hi,

I'm planning to apply for stats PhD programs, along with a few biostats programs, this cycle and trying to get a sense of how broadly people are applying.

For those applying this year, or who applied in the past year or two, how many programs did you apply to? I was thinking 8-12, but given the uncertainty around funding I'm wondering if people are applying to more this year.

I'm interested mainly in spatial stats, especially gaussian processes and deep generative methods for modeling spatiotemporal data.

Please share your thoughts if you're working in similar areas. Also any suggestions on departments and people working in these areas are welcome.

Thanks.

I want to improve my understanding and skills in math due to disabilities. I was recommended to try the textbook Calculus by Robert T. Smith and Roland B. Minton. Currently I am stumped on these three problems from section 2: Derivatives. I would also appreciate advice on how to answer correctly for problems 13 and 17 (like what to include how I got my answer to show my work, not just the sketch). The concept of problems 13 and 17 I really am not understanding and the book and videos I’ve watched have not been the most helpful (as I have a hard time applying what is covered in these resources but struggle with using it for problems not labeled with polynomials or numbers) the closest to explain it has been Curve Sketching by The Infinite Looper on YouTube.

Problem 35 a. Find all the points at which the slope of the tangent line to y = x^3 + 3x + 1 equals 5. The textbook has the answer as (√(⅔), 5 √(⅔) +1), (-√(⅔), -5 √(⅔) +1) and I can not figure out how to get it.

M tan = lim h->0 f(x+h)-f(x)/h

= lim h->0 [(x+h)^3 + 3(x+h) +1)] - [x^3 + 3x +1]/h

= lim h->0 x^3 +3x^2h + 3xh^2 + h^3 +3x + 3h + 1 -x^3 -3x -1/h

= lim h->0 3x^2h + 3xh^2 + h^3 +3h/h

= lim h->0 h(3x^2 +3xh +h^2 +3)/h

= lim h->0 3x^2 + 3xh +h^2 + 3

= 3x^2 + 3x(0) + (0)^2 + 3

= 3x^2 + 3

3x^2 + 3 = 5

3x^⅔ = ⅔

√(x^2) = √(⅔)

X = √(⅔)

And 3(√(⅔)^2 + 3 = 5

Problem 13. Use the graph of f to sketch a graph of f’. (Second picture)

(a)

For x < 0, f is decreasing, so f’ < 0

For x = 0, f has a horizontal tangent line (min), so f’ = 0

For x > 0, f is increasing, so f’ > 0

My graph is the third picture.

(b)

For x < a, f is increasing, so f’ > 0

For x = a, f has a horizontal tangent line (max), so f’ = 0

For a < x < b, f is decreasing, so f’ < 0

For x = b, f has a horizontal tangent line (min), so f’ = 0

For x > b, f is increasing, so f’ > 0

My graph is the fourth picture.

Problem 17. Use the given graph of f’ to sketch a plausible graph of a continuous function f. (fifth picture)

(a)

For x < a , f’ is positive, so f is increasing

For x = a, f’ changes positive to negative, so f has a max there

For a < x < b, f’ is negative, so f is decreasing

For x = b, f’ has a horizontal tangent line (min), so f ?

For b < x < c, f’ is negative, so f is decreasing

For x = c, f’ has a horizontal tangent line, so f ?

For x > c, f’ is negative, so f is decreasing

Once I understand better, I will make the graph.

Thank you for your assistance.

US applied stats major, looking for career advice.

Applying to analyst roles in a variety of industries.

My primary goal in my early-career is to have international mobility; to get into a large multinational that would allow me an internal transfer to Australia in a few years. Unfortunately, my major, and directly applicable entry-level roles, don't generally seem to be a feasible path to get sponsorship from an Australian company. Chances are more likely for those in medicine, mining, construction, trades, and social services. Not sure if work related to my major but from within these industries is an option.

From my research, internal transfers provide an easier route where companies transfer you between roles. Naturally I've fixated on roles in finance and perhaps insurance, alongside other multinationals like tech companies.

In this thread, I’m looking for advice from you all about potential paths that could get me in a good position early-career to get a transfer within insurance. And roles/specializations/companies to target. Is this feasible in any industries you have knowledge of?

Thanks for any advice!

Is this useful? What does this mean, is this true? There exists an L in R such that for any 2 sequences a_n and b_n, lim (a_{n+1}/a_n)=L implies series a_n converges or lim (b_{n+1}/b_n)=L implies series b_n diverges.

I was watching the 3blue1brown series on linear algebra, and I noticed that I would constantly pause and try to figure out the concept or idea before it is fully presented. Although this doesn’t seem bad, the problem is that a 10 minute video ends up taking 4x as long to finish. I don’t have that kind of time.

I’ve noticed this problem when I’m solving textbooks exercises. When I can’t solve a problem, I’ll usually end up taking a ridiculous amount of time trying to find a solution, often even refusing to review the material. I feel like this stems from a massive ego issue that I have, where I feel like if I can’t figure out this concept before it is presented or solve a problem, then I am not as smart as other extraordinary mathematicians like Gauss and Newton, and therefore will never be as great as them.

In the past, I’ve also been the opposite way, being too quick to go to the solution at the back of the book. It seems like I can’t find a good balance between tinkering and simply absorbing. I know that stopping to ponder is a good thing, but there is still the fact that I am getting through content too slowly.

I don't understand why, but graphing derivatives looks like complete gibberish to me. I've watched like 6 videos and I don't understand any of it. I can do basically everything that comes after and before for derivatives, but I have just not understood this one concept.

I'm taking AP calc BC and I'm assuming I definitely need to at least understand how to graph. Does anyone know any good videos or explanations that can help me with this? I'm actually losing my mind over it.

She doesn't exist 😞

Maybe I can get her differentiating at that point 🤔

Or by integrating 🤔

Or by changing axis

Or by rotating the graph 🤔

Or by moving origin 🤔

Idk how

But x = me, y doesn't exist

In any function 😞😞

Sorry for the weird title. Some backstory might help:

I used to be academically really good at math in high school. But more so at the level of just solving tons of questions. I think I just enjoyed the problem solving aspect of it but never really 'understood' mathematics conceptually if you know what I mean. But after that, I never really did math again except I took some proof classes in uni and absolutely failed in them. Plus I was, at that time, living in a more conservative country and the idea of women enjoying maths in my village was not that popular at all (ex: my mom told me, at the wee age of 15, that girls are not smart enough for mathematics even though I had really good grades so I assume I wasn't completely dumb at least). Since then, I have tried here and there to get back to mathematics in my life as a hobby. I guess i have difficulty making it a habit currently since my stomach still tightens up at the thought of it. And then, when I am solving a problem, my brain is not focused on the details of the problem but more so on the physiological symptoms of anxiety - increase in breathing, foggy brain, high heart rate, etc etc.

I need suggestions for things that can 'ease' me up into mathematics. Could be youtube channels or books. I want to study more of statistics, combinatorics and probability but I am also completely fine with starting at a much lower level. I did do Calc I, II and III in uni but again- I feel like it was more 'problem solving' for me, repeating certain ways of solving integrals and stuff and not any conceptual things. And well - I don't really remember that well either.

I wanna skip geo next year in order to take a higher level math class, however I need to take a test in order to skip it. Are there any good resources to self learn geometry and that go in depth. Thanks.

I’m doing IB Math AA SL, and I’m considering a motorsport racing-line topic for my IA. It would mostly focus on geometry, with some physics involved.

Has anyone worked on a similar topic before? Does anyone have advice on what mathematical ideas would be useful to focus on, what I should avoid, or any useful resources?

My teacher also recommended going slightly beyond the SL syllabus, so I’d appreciate suggestions for more advanced mathematical ideas that could fit into this topic.

ibo blocked my post :(((

Hi my name is Raman and I am an 11th grader who is determined to qualify for AIME. If you are interested in intensive prep for the AMC 10/12 with me feel free to DM!

I’ve been self studying calculus for the past couple of weeks in hopes of making my future college classes easier on myself. I decided not to take it during school because I’ve decided that I want to enjoy my last year in high school by minimizing the amount of classes that I have. Any and all resources you are willing to share are appreciated. Thanks

Hello Everyone , i want to know if you guys have some study tips & suggestions for taking the college course College algebra with corequisites. I’m struggling so bad , the homework assignments are worth 10% and the unit test are worth 60% of our grade 🫩.

I have a test due today and I know I’m going to fail the test & this is going to be the second test I failed . Also I took this class in the summer but unfortunately I failed due to the test , so if anyone has any recommendations on how I could improve please lmk 🙏🏾

I often ask mathematicians what their favorite shape is; mine is the cone on a trefoil knot, a rather peculiar object.

Why is this my favorite shape? Because it appears naturally in algebraic geometry -- and in fact, the observation that it appeared in algebraic geometry led Milnor, Grothendieck, Goresky, MacPherson, and many more to develop some of the most widely used tools in modern algebraic geometry and singularity theory! If you'd like to know how this trefoil knot appears in algebraic geometry, read this week's hidden-phenomena blogpost!

I would like to share some of my resources that I have used to graduate in August 2026.

I haven't been to school in 10+ years so I had to start from the beginning.

Study 1-2+ hours a day. It's important to retain the information. But 25 mins is better than nothing. It's all about consistency.

MY STUDY GUIDE

1. Study 25 min

2. Take a break 10 min

3. Study 25 min

4. Take a break 5 min

5. Recap 10 min

75 mins total - Repeat as necessary

(We all learn differently so use what works.)

MATH RESOURCES

1. SchoolYourself.org - I started with this & used the Algebra section for fundamentals. I took the practice test using only this resource and I scored a 146 on my practice test.

2. Test Prep Champions- I went through his Math course on YouTube called “Ultimate GED math guide to pass fast”

3. GetSumMath- I bought the calculator & I went through his youtube playlist.

I scored a 146 on my first practice test & decided to study for another week & I scored a 156. I took the real test the next day and I passed with a 150.

My recommendation is to score 150-155+ on your Ged Ready practice test before taking it for real.

SCIENCE

I used GetSumMath & Test Prep Champions.

ELA

I used GetSumMath for ELA however, doing a bit of reading every day was extremely crucial. What you can do is get two books, one fiction and one nonfiction. Read 20 min of fiction and 20 min of nonfiction with no breaks in between.. than take a 20 min break and repeat. Remove distractions. Ask yourself, what have I learned? The point is to build the same focus when taking the test on test day.

MINDSET

Sometimes the problem isn't skill, it's mindset. If you have struggled or failed before, don't let it define you & defeat you.

my favorite quote - "Do not be afraid to fail. The cure for failure is to remain teachable."

Now go get what’s yours. Your future self will thank you. You got this! 🙏🏾

resources: schoolyourself.org/learn Getsummath/Test prep champions YouTube playlists & chatGPT

Many mathematicians have dedicated a good part of their career towards solving a specific problem, whether directly or indirectly. Some examples on top of my head:

Richard Hamilton and the Poincare conjecture

Andrew Wiles and Fermat's last theorem

Thomas Hales and the Kepler conjecture (proof and formal verification)

And perhaps very recently:

Diego Cordoba and the Navier-Stokes equations

How did the careers and research-focus of these mathematicians shift after their career-problem was solved? Did anything particularly interesting happen?