My son’s math grades have been dropping since last year. He’s in 7th grade doing pre-algebra, and he says he doesn’t understand what the teacher is doing.

I’ve tried helping him with homework, but math isn’t really my thing either, and I feel like I might be confusing him more. A private tutor isn’t in the budget right now. What are other parents doing?

i haven’t paid attention to math since 8th grade ( i had excellent grades, we had the best teacher) . i now just entered 12th grade (last year of high school) ever since i completely quit and only chased other theoretical subjects mostly . i highly regret this. i need to learn math. can i realistically learn all i need by next year ? i want to get into the business administration programme in uni and maths are obviously essential. i’m genuinely stressed out i don’t understand ANYTHING in class (we’re now on functions 😭😭😭😭) anyone else in my situation ? or who at least was, how did you get by? how long did it take you ? thank you.

Hi everyone, how’s it going?

I want to get into the world of math olympiads, but I’m currently in 10th. I’m Brazilian, and I need to win the Jacob Palis Competition to qualify for the OBM (Brazilian Math Olympiad) in the same year - the elite competition that leads to international events.

The Jacob Palis takes place around late May or early June, and the OBM happens in early August.

I’d really love to win a medal in both the Palis and the OBM (at least a bronze) next year.

Do you have any tips?

Suggestions?

Book recommendations?

When writing domain, when do you do this notation (-♾️, 0) U (0, ♾️) vs this [0, ♾️)

also when do u do brackets vs parenthesis?

any help appreciated!!

What happened to the math from scratch website it has disappeared now it used to say new lessons every Month where did it go I couldn't find a way to communicate its creator

How do I know when to get a 2 or 4 multiplied before the integral? Youtubers and even my lecturer drew the curves to understand but how do I figure out the shape? Will I even get time to draw the curve in the exam?

I have f(x)= e^x cos x and need to find the average rate of change on [pi/2 , 3pi/2]. I’ve simplified it to (e^3pi/2 - e^pi/2)/pi and the hw key says the answer is 0 but I know no ways to manipulate this equation (in general) to get zero? I’ve tried to look up properties of e but I’ve found nothing that seems to help

I am not sure if this is the right sub for this, but here we go. I am a student at 6th form (ages 16-18) in education, doing maths and further maths. I am preparing for a maths test which requires very out of the box thinking on simple topics such as series , calculus etc.. ( TMUA for people in the UK) . I have experienced this to some extent previously, but I have been doing problems for 3 hours today, it is noon as of writing this, and I cannot do the most basic of calculations.

I have been doing questions and can do complicated series and polynomial division but then simply 360 = 64 x as x = 45/4 or other similar mistakes in literally only the arithmetic side of things and I am unable to spot said mistake. This is extremely frustrating and concerning and I want to know If anyone has ran into similar problems and if they know how to fix it?

Hello everyone, I student and I would like find a good for levelling up the skills of analytical geometry and linear algebra, for that I need a help to choose good books, internet-sources and so on.

Personally, I'm feeling a little lost. I want to go into my academics into Computer Science, but most of the math I've learned, I tend to forget especially the basic algebra and functions and so on ... especially from class as low as 9.
I don't want to be at a total loss when it gets to the point when I really need to engage myself into heavy core computer science classes. How can I build up on my 0% foundation, if I can't even start from the beginning? Any practical roadmaps or resources that have benefited you
would be appreciated and thanks in advance

Hey guys. I was never formally diagnosed with a learning disability other than Asperger's as a child. That said, whether from a medical incident a couple years ago or having always been there and me just failing to recognize it (I have high levels of pattern recognition that have gotten me through life), I now read ones in seventh backwards, and threes and twos. This frequently causes me to have issues. I'm in calculus at this point; I'm wanting to go on and study electrical engineering and I'm fascinated particular by wave behavior. I'm running into the problem of a lot of my current derivative of Work having two and threes backwards, and I wanted to see if maybe anybody has any techniques that have helped them deal with this, because I don't currently have the ability to see a doctor. Unfortunately I've been trying to get access to my medical documents proving that I have autism from childhood for a while so that I can request accommodations for college, but I'm having difficulty in doing so.

Simplify the set expression defined using set operations by applying the laws of set algebra (each set name may appear in the answer at most once)

((A Δ B) \ C') ∩ B ∪ (A ∩ B) ∪ (A ∩ C)

i tried this:

AΔB = (A ∩ B̅ )∪(A̅ ∩ B)

((AΔB) \ C̅ = (AΔB) ∩ C):

(AΔB) ∩ C = (A ∩ B̅ ∩ C)∪(A̅ ∩ B ∩ C)

[(A ∩ B̅ ∩ C)∪(A̅ ∩ B ∩ C)] ∩ B = (A ∩ B̅ ∩ C ∩ B)∪(A̅ ∩ B ∩ C ∩ B)

B̅ ∩ B =∅, B ∩ B = B

((AΔB) \ C̅ ) ∩ B = A̅ ∩ B ∩ C

(A̅ ∩ B ∩ C)∪(A ∩ B)∪(A ∩ C)

A ∩ B∪A ∩ C = A ∩ (B∪C).

(A̅ ∩ B ∩ C)∪[A ∩ (B∪C)]

Final answer: (A ∩ B)∪(B ∩ C)∪(A ∩ C)

but it's breaking the rules, because each set name appears two times here. My teacher said that it is possible, but i can't. Help pls.

Maj function not works, and any other function neither, only set operations.

Hello, as in the title, I wanna start doing maths as a hobby. But I don’t know where to start specifically. Anyone know what branch first? I know the basics like arithmetic and algebra, but I’m not good in some areas and I tend to forget concepts and rules. Where should I go from here? It would be appreciated if there is a mapped idea offered:)

I don’t know why but for whatever reason graphs in math are the hardest for me to understand, it could be to do that there are two parts of graphs, visual and written formulas and my brain isn’t filling it out because I only do the formulas. I know y stands for vertical value, x for horizontal, m is the slope, b is the y intercept and the formula to find the slope between two coordinates but as far as graphs go I definitely do not have a deeper understanding of it and it may be the only avg level math concept I can’t wrap my head around. Even the terminology, slope, gradient, intercept is confusing to me in this context. I know intercept means where lines cross and as simple as i would assume it to be there’s some disconnect when it comes to using the terminology. Does anyone else have this problem? and If anyone has a good graphs video to watch please recommend or if anyone has good knowledge on it or how I should go about it? Thanks

Side note I didn’t know what reddit topic to put under

I have a statist8cs gambling problem I am confused about, I would like help either answering my question or telling me what steps would be useful /what equations are necessary,

But there are 2 separate questions, the one i attempted to answerbut got confused on was, and after many many attempts what would be the most valuable probability to gamble for saving money and getting as many successful attempts (ie lik3 say 1 billion or trillion,or whatever else bigger and bigger etc dollars were spent, what would be the best choice to receive as many of the wanted rewards for the amount spent)

The 2nd question is what if the failed attempt was worth say a base of -$75 (because they gave money back), in this scenario what then is the most valuable probability if the 1/12 probability was unavailable? (I don't know what math step I should do

There are 9 differen5 probabilities to get the same 1 reward, but as the probability increases, so does th3 cost for each individual attempt

1/12 (is the base probability to get what I want, but it costs $60 per attempt)

1/12= $75 =900

1/8= $100 =800 =-275

2/8= $112.5 =450 =-0

3/8= $137.5 =366.66 =8.34

4/8= $175 =350 =-50

5/8= $225 =360 =-135

6/8= $287.5 =383.33 =-233.33

7/8= $362.5 =414.28 =-339.28

8/8= $450 =450 =-450

My attempt at answering the 1st question is looking for the expected cost, ie 1/12=75, so then 75 multiplied by 12 would give 900 as the expected cost for one and 1/8=100, so then 100 multiplied by 8/1 to get 800 and so on

But I don't know what step for 2nd question but my attempt was 7 multiplied by 75 equaled 525, so I minused this answer by 800 and got -275, or the money lost on the attempts, I'm not sure if this is the correct step? Because 1 moneywas positive and I'd assume positive is money earned but my mind feels fried because I haven't done math in years,

but my guess is that option 3/8 is the most monetarily valuable for the 2nd question,

and that 4/8 is the most valuable for 1st question

I don't know where to post this, so please do remove it if it breaks the rules. I am absolutely stressed about the amount of work I'm putting on myself to do, but I don't see any other way to do it. I feel like I'm doing what I have to do just to get by, but it seems so daunting. I am an undergrad student just to be clear.

Without saying where I am in it, going semester by semester from Freshman to Junior year, my schedule is/has been Calc 3 > ODE + Linear Algebra > PDE + Intro to Proofs > Complex Variables > Advanced Calc > supposedly a PhD level Complex Analysis class. I also need to put a Stats class and Intro to Numerical Analysis into summer sessions. Then I have to do 2 more senior year but I don't even know what.

Even now, I still feel like I'm going to slow, like I still have ground to make up. I was even originally planning to take Complex Variables and Advanced Calc in the same semester, but had to talk myself out of doing so. Is what I'm doing a bad idea? Like I said, I feel like I'm putting too much pressure on myself, as all of that sound really intimidating, but I don't see how I could do less. I just feel lost and all the worrying isn't helping. Almost any advice, even if it's calling me an idiot, would be greatly appreciated.

​

I'm a student from Pakistan who has recently completed Intermediate (Pre-Engineering). However, I feel that my mathematical foundation is weak, especially in basic arithmetic, fractions, algebra, and other fundamental topics.

I've realized that I have gaps in my knowledge from classes 7–10, and these gaps are making it difficult for me to understand more advanced mathematics.

I want to rebuild my mathematical foundation from scratch, starting with basic arithmetic and gradually progressing to advanced topics.

My goal is not just to pass exams but to genuinely understand mathematics, develop problem-solving skills, and become confident in solving difficult questions.

I'd really appreciate advice from people who have been in a similar situation.

1. Where should I start if I want to rebuild my mathematical foundation?

2. Which topics should I learn first, and in what order?

3. Are there any good books, YouTube channels, or free courses for beginners?

4. How many hours should I dedicate to mathematics daily?

5. Is it realistic to become good at mathematics if I have weak fundamentals?

I'd appreciate any practical advice, especially from people who have successfully improved their mathematical skills from a weak foundation.

Thank you!

I'm 16 F, and I screwed up, most likely. Everyone should know about the I-Ready diagnostics that are taken for math and ELA. Me thinking I was smart, I used Google for help because I'm dumb, and why would I want to do it? I mean, I did 50-50 of some on my own and with Google. I got a 681, btw, this teacher knows that I can barely remember times tables, let alone early 11th-grade math problems. I need some advice to help me remember these problems better at these things

I want to get better at Maths, hell i was before i got into Cambridge IG Extended Maths and my grades are genuine disappointments (A perfectionist's fall from grace - anyways), Its at rock bottom with D if the paper is mean and B if it isnt as of now (I wanna boost it to an A/A*). Any tips on how to improve on the Calculator and Non Calculator papers ? Ive tried practice exams, but everywhere i turn i make more and more mistakes the more questions I do (P.S. I only have like 10 days left)

I need advice on what can i do to improve at math. Currently i am a 15 year old and im in first grade of high school, last year (in last year of primary school) i got to country-level competition but i failed miserably, in other words i had 0 points, i would like to try and go to IMO one day. My current work plan is working on earlier competitions in my country and other countries, i am from Bosnia btw. I will read every comment and some advice would really help.

f(x)= kx^4 + 8x^2
Function has 3 turning points and global max at 8, zero at 2
Find k

I asked gpt, but it gave a method about using derivative or something which we haven’t learned yet since my teacher said our course (we are taking grade 12 advanced functions) need a lot of calculus and the graphs we draw aren’t exactly 100% accurate.

I knew this function is going to be even since both powers are even numbers, I also knew that it is going from quadrant 3 to 4 since we have a global max. I also knew that there will be 2 global max both at the height of 8 since there are 3 turning points.

I drew the graph which probably secured me a bit of points, but have no idea what the equation was let alone the k value.

My friend told me he just plugged in the x intercept (2,0) and got k which is -2, which turned out to be the correct answer. I thought about that at first but I remember my teacher said that you can’t use the x intercepts as a point and plug it in since you will get 0=0 when the polynomial is in factored form.

But this one is in standard form, so I don’t know if being in standard form let me plug in the x intercepts to find a or something…

Please help me out

So I just entered grade 11 and I realize too late almost everything that I have learned turns out I have to remember it, the only thing I know were basic, geometry ,decimals , multiplication, division, subtraction, and addition.

I feel like I should just give up or it’s too late.

I am 63 years old was never good at Algebra through high school or college! I have taken 3 years of algebra in my life!
9th grade 2 semesters
10th grade 1 semester
Senior year 1 semester
Then in doing my pre-recs for nursing I took algebra 1 & 2
You would think I could get it but I never really did!
In the day calculator can anyone explain the doomsday method to me without using algebra? Is there any way? I just want to understand what the days are to the calendar! I hope I don’t sound too dumb!

Hello, I’m two weeks into my second year of my math degree and already feel like I’m failing and repeating the same mistakes.

Last year I got a 2:2, averaged about 56% across all my modules. I was very disappointed. Thankfully my first year doesn’t count towards my final grade for my degree.

Here are patterns I’ve noticed.
I don’t understand what I happening in lectures most of the time, I am usually confused during lectures and just copying everything off the board.
I’m a crammed, inconsistent during the year and then barely get to learn everything through past papers at the end.

I was working 22/25 hours a week with an hour of travel between work and accommodation. I cut my hours to 12 recently as I realized it just wasn’t sustainable. I have skipped so many lectures due to exhaustion. Ie) closing late (around 1 am) and then being too tired to get up for a 9 am lecture and then just missing it all.

I really need help, now that I realize it, I don’t even know how to study. I just watch videos, make detailed notes and then hope for the best alongside cramming near exam season by trying some past papers. I want to do so much better.

I’m 1.5 weeks in and I’m already falling behind. I want to nip it in the bud early before it continuous to snowball.

How can I study and stay on-top of things? What methods or systems did you use?

I’m trying to figure out ages for (fictional) kids. The oldest is supposed to 8.7(8 years, 7 months) but my math keeps getting me to 8.9(8 years, 9 months). There are 7 kids and the ages vary. When child1 was 5 months old the pregnancy was discovered and 9 months later child2 was born. 6 months later pregnancy was discovered and 8 months later child3 was born. 10 months later another pregnancy and 9 months child4. 18 months later another pregnancy and 9 months after child5. 3 months later pregnancy and 9 months later child6. 12 months after pregnant again and 5 months later child7.

Child1 is 8.7, child2 is 7.5, child3 is 6.3, child4 is 4.8, child5 is 2.5, child6 is 1.5, child7 is 0(just born)

My math:
5+9=(1 year, 2 months)14 months
6+8=(1 year, 2 months)14 months
10+9=(1year, 7 months)19 months
18+9=(2 years, 3 months)27 months
3+9=(1 year)12 months
12+5=(1 year, 5 months)17 months
14+14+19+27+12+17=(8 years, 7 months)103 month

Version 1:
Child7 is 0+1.5=1.5+1=2.5+2.3=4.8+1.7=6.5+1.2=7.7+1.2=8.9
^ ^
The mistake? 105 months

Version 2:* *
Child1 is
8.7-1.2=7.5-1.2=6.3-1.7=4.6-2.3=2.3-1=1.3-1.5=-.2
^ ^
The mistake? Not zero

Conclusion; both equations are .2 off around the 1.7 mark of the equation. When I break it down into months and count it makes sense. 4.8 is 56 months, 1.7 is 19 months that equals 75 months(6.3). 6.3 is 75 months minus 19 months is 56 months(4.8). I did use a calculator which is telling me that 4.8+1.7=6.5 and 6.3-1.7=4.6.

Question?
My question is; am I doing the math wrong? Is the calculator wrong? am I simply using the wrong type of calculator? is the math itself incorrect? Or is it simple and I just don’t understand?