Maths Studies
For Math Studies discussions
953 topics in this forum
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Ib Math Studies Project Hey, i'm doing my project in like a week, and I'm having really hard trouble coming up with a topic title...these are the ones I've come up with so far, so I wanna know if these are ok or if I should word them differently or could give me some ideas, sorta like a gentle push lol....huuge thanks ..its so hard since I hate absolutely hate math..its my worst subject ever. 1. Does time spend playing video games affect student performance in class work and/or exams. 2. Does playing a certain game genre influence violence in children and is it based on gender? 3. Do students who listen to different genre of music get different grades for tests?
Last reply by godofib, -
- 4 replies
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We are soon to begin working on our project works in Mathematical Studies (an area which i'm unfortunatley not that comitted to). We are firstly however, going to decide upon what our project is to be about. It has to include some kind of problem, a research question, data collection and of course mathematics... sophisticated mathematics. I am totally confused about what I would like to deal with. Our teacher told us to choose to work within a topic/area that we like. I am in to Video Games (PC mainly) and I know that there probably are loads of problems to deal with within the world of gaming... my problem though, is that I do not know where to start looking. I am all ea…
Last reply by Vvi, -
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Hello, I was just wondering how to solve 3x^2 -6x +4 I have issues with the 3 in front of the equation. Additionally, my friend would like an easy understandable summary of how to complete the square. Once upon a time it made sense, but now it's like french vocab, foreign and hard to remember. THANK YOU
Last reply by victimofIB, -
- 0 replies
- 645 views
Hi!! I am soooo confused.. I have it a brick wall when it comes to figuring out the k and a values... can anyone help me please???
Last reply by nadya, -
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what do I write in my introduction for the investigation I thought I would just write the aim of the investigation and why do it. State what a parabola is and state why it is important. Am I right?
Last reply by suisue, -
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What's the difference between the sine function and cubic function? Which situations do you apply each of them to when modeling graphs? Also, can we describe the sine graph as a 'polynomial'...? Thank you!
Last reply by Tilia, -
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We were given this bonus assignment from our HL math class, to find a pattern for the matrix A in terms of n, defined as: A [2 1] [1 0] That would work for any given matrix A^n For example: A^2 [5 2] [2 1] A^3 [12 5] [5 2] Where n = 2/3/etc, and the vales in the matrix are determined based on n. Our entire math class could not find a solution to this, even our teacher. Any ideas?
Last reply by Toffu-san, -
- 1 reply
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hi guys : ) i m starting my maths ia soon and i have to come up with a title / topic. i was wondering if this idea is k the relationship btw drinking water and going to the toliet?! or something like.. does different types of drink effect the number of times you go to the toliet? thanks in advance. xx
Last reply by Tilia, -
- 5 replies
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I have a test next week, and since my teacher isn't used to teaching SL, I hope someone here can help me more than she can. 1. "It is known that AB=A and BA=A where A and B are not necessarily invertible. Prove that A^2=A." Why isn't B=I? 2. "Write 5A^2-6A=2I in the form AB=I and hence find A^-1 in terms of A and I Thanks in advance!
Last reply by Tilia, -
- 4 replies
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Need some help on what would be the best line of fit for the flow rate data of norichucky river into tennessee. I mean what would function to use for best fit? trigo or polynomial and how to get the equation for this
Last reply by Flawia, -
- 2 replies
- 897 views
I have a question about Math IAs in general. Are we allowed to use the exact same sentence that was on the problem in our portfolios? For example let's say on the problem sheet it said, "hello my name is al;wkejg and i hate you" then can i write that exact same sentence in my portfolio? Thanks
Last reply by bohemian03, -
...Help...\ Math portfolio For criterion D5, what is meant by "Gives a correct formal proof"
Last reply by Sandwich, -
- 1 reply
- 696 views
1. When the expression (2+ax)^10 is expanded, the coefficient of the term in x^3 is 414720. Find the value of a. 2. The equation x^2-2kx+1=0 has two distinct real roots. Find the set of all possible values of k.
Last reply by Toffu-san, -
- 8 replies
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Struggling through my first Maths IA (Matrix Powers-- ), I was wondering how to write a proper introduction, and what that would entail. I have some vague ideas, but I thought it'd be beneficial for us all to throw this out to other IBers. What constitutes a good (or great!) introduction, and what are aspects to include?
Last reply by Cubz, -
- 2 replies
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hey i am doing my portfolio and i am using a hyperbolic function to model my data (ax+b/cx+d) and i was wondering how you can determine the vertical and horizontal asymptotes for a hyperbola. i am having trouble especially with the horizontal one any help on this would be greatly appreciated thanks
Last reply by moneyfaery, -
- 2 replies
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I just wanted to know what the conversion rate is for SL Math. For example, you score 27/50 = 54% raw...what is your IB score after conversion... I think Bio is like 20/25% or something and physics is around 30%...but what is math?
Last reply by __inthemaking, -
- 4 replies
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Okay I'm trying to do the following question: The function f is defined by f : x--> 30 sin 3x cos 3x, 0 < x < pi/3. (a) Write down an expression for f (x) in the form a sin 6x, where a is an integer. (b) Solve f (x) = 0, giving your answers in terms of p. Now I spotted you have to use an identity, and it does make sense to use the double angle formula (which the mark scheme also suggests)... however I'm confused as to how to manipulate the double angle formula in order to get the answer for part (a). As the double angle formula is going to be either sin2x = 2sinxcosx or cos2x = 1- 2sin2x I'm having difficulty working out where this stands in relation to the fac…
Last reply by Sandwich, -
- 7 replies
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I'm having some difficulties with the calculation of conditional probability using the formula: P (A|B) = (P (A ∩ B)) / (P(B)) For example, how would you calculate: On a given day, photocopier A has a 10% chance of a malfunction and machine B has a 7% chance of malfunction. Given that atleast one of the machines has malfunctioned, what is the chance that it was machine B? This is what I tried: P (Machine A has malfunctioned provided that one of the machines has malfunctioned): P (A malfunctions) = 7/100 P (One of the machines malfunction) = 17/100 [?] ... I need help from here onwards!
Last reply by y.v, -
- 6 replies
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I know how to calculate the Standard Deviation and Variance of Grouped data by hand. However, is there any way to calculate those using 1-Variable Stats on the GDC?
Last reply by y.v, -
- 7 replies
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So i gave up my entire spring break to study, and have been studying like crazy, but still not as much as i planned to. Mostly however i've been studying for IB HL bio because being a pre-med student in the fall, its what I need. I've never really been a math whiz and as i sit here in the library studying for bio my IB Math Studies review packet fell out of my "IB STUDY BINDER", help! I have NO idea how to study for math at all; these review problems don't help me at all...i have no idea how to do them nor do i know if my answer is right. ANY SUGGESTIONS?!
Last reply by sweetnsimple786, -
- 2 replies
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For those who are doing Discrete Math for HL Options, I got a question. For a wheel graph, Wn, does the number of vertices, n, include the centre vertex? In my H&H textbook (green one), they were inconsistent with that. The first image below is part of the lesson where they stated that n does include the centre vertex. While in this image, which shows the homework section, the answer for such question says that n does not include the centre vertex. So, does n include the centre vertex?
Last reply by Ongfufu, -
- 2 replies
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just been doing some revision for the final exams and wondering about these questions on logarithms solve for x: log4 x^3 + log2 x^(1/2) =8 (the answer in the back of the book is apparently 16 but im not sure why) similar question: log 16 x^5=log64 125 -log 4 X^(1/2) note that the numbers closest to the log should be in subscript its maths SL btw if you need to know
Last reply by Jenna, -
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Could anyone help me solve: What is the co-efficient of: x^3 in the expansion of (x+1)^5(2x+1)^4 using the binomial theorem. Thanks!!
Last reply by master135, -
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A few months ago I failed to save a back up copy of my data for my math ia and my computer ate it (my computer deletes things at random. it has since the day i bought it. I should have known better than to not save a backup.) I had to start all over again, and I was unable to re-collect some of my information. I needed to start all over with a new topic. After spending a LOT of time without a topic I've finally gotten myself one, but I'm not sure if it's any good. I'm thinking I might compare whether sex is a factor in where/if people would like to study abroad in college. Planning on doing some chi-squared tests and things. Also I'm not sure how I want to break te wor…
Last reply by Tevaerua, -
- 1 reply
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For the maths studies stat assignment , when using the Chi-squared test, i understand it is better and more accurate to use a 5 % than a 10% , when looking up the critical values... (?) BUT can we use 10% if our value is JUST off the 5 % range, and talked about in the validity etc section or not? Ok hope that made sense:)
Last reply by Vvi, -
- 3 replies
- 752 views
Hey, does anybody know a formula to calculate the value of R^2 for a given table of values? I have a table with original data points and another table with points that I have obtained experimentally. Any help is appreciated. Thanks!
Last reply by Hedron123, -
Find the exact value of the x coordinate of the point of inflection on the graph of y= x2 ln(1/x2) Help, please
Last reply by Ongfufu, -
- 4 replies
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Hi there's one of the questions in my type I task that I don't understand. It says "M= a+b a-b / a-b a+b (2 by 2 MATRIX) show that M= A+B, and that M^2 = A^2 +b^2". First of all, how can M^2 = A^2 +b^2 and not (A+B)^2???? Help needed, Thanks!
Last reply by ibastudent, -
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hey guys...if anyone is familiar with this...can anyone plz plz plz help me do this cuz im already stuck at number 2!..mine is due in 3 days!!
Last reply by Saransh, -
- 4 replies
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Hey guys, i was wandering if anyone could help me with the portfolio, i do not understant it and the teachers wont help us:(.... if anyone could help.... please add me on msn at [email protected].... THX a lot
Last reply by Ravi, -
- 6 replies
- 1k views
Ok, so first off, i'm new here at IB survival, i can't believe that i hadn't heard of this site earlier! It's always good to know that there are other people out there going through the same stress and social suicide that i am, especially when the 2nd closest IB high school to the one i go to is 300 miles away. Well...to get into the discussion, we've been assigned our first IA and its a bit of a daunting task. As if the problem weren't hard enough, the task of writing an actually paper on it is even harder! I've never written any kind of math report before and even our teacher has said that getting all 20 marks is nearly impossible...grim words! If any of you all hav…
Last reply by mephisto275, -
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- 605 views
GAH! My math ia is to compare the number of average pomegranate seeds with the number which was post on a site. What do I do?!?! Its due today, I have three hours to finish it, I'm on part C. I dont know how to test it, I'm supposed to use a T-Test..PLEASE HELP ME!
Last reply by Neko_chan, -
- 15 replies
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How would i solve this system of equations by hand of course 625A -125B +25C -5D +E =4.5 112A -34.3B +10.6C -3.25D+E=2.25 0.00391A -0.0156B +0.0625 -.25D +E=6.25 92.4A + 29.8B +9.61C + 3.10 D + E= 1.40 625A +125B +25C +5D +E =3.85 Help would be very much appreciated
Last reply by Ongfufu, -
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Hi! So I'm struggling with coming up with a suitable Math Project topic but I thought of doing Body Mass Index in different age groups as a statistical study. -but- I talked to my teacher today and she said that it is not a very good idea of doing statistics because it is too simple and not too much to write about. :S I don't know if I shoud agree or disagree, eventhough I thought that it seemed like a really good topic at the time. I saw another thread that was about something simmilar, but that was about finding the BMI data. Any ideas about what should do? Any help is appreciated.
Last reply by RoxxarN^^, -
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hey guys I am Math HL Y1. im now in second semester but the first semester final exam was so hard the teacher said it was IB EXAM LEVEL, and I ended up getting C on the exam and B for the semester grade Is there like great notes on this site that I can refer to review every concept? i do have notes myself but it's quite disorganized ㅠㅠ
Last reply by buccaneer247, -
WEll this one inovlves studying the model of tennis. there are 3 parts to it but you have to use infinite geometric sequence to find the answer to part III after that, finding the odds is really easy.
Last reply by siyna, -
Hey guys! I'm kind of running late in completing my maths portfolio and trying to get it done as soon as possible. Our class has selected to do the “modelling probabilities in games of tennis problem. Although the problems seem pretty straightforward, I find myself stuck in a few problems in part two.This particularly concerns the part where I need to define the random variable Y (part 2). Initially I thought it was a binomial random variable Y with n=70 and p= 1808/2187, but it doesn't seem to work out. So, I'm guessing that I need to use stuff about binomial random variables to construct another random variable which models the situation. But this idea here entang…
Last reply by siyna, -
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I wanted to seen what a type II math SL paper should look like. Im doing the one on fishing rods but i dont know how to format it, or like anything..
Last reply by cordi827, -
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For the Math Studies IA is there any format used? Can I use first person?
Last reply by bpfuller22, -
- 3 replies
- 615 views
We're learning Series & Differential Equations and using the H&H book which I find to be just horrible. I mean, the H&H Core book was okay but the Options? Wtfffffffff. Are there any other books available so I can actually learn and [i]understand[/i] instead of memorizing mathematical gibberish? Also, how is everyone else finding the Options?
Last reply by SharkSpider, -
- 8 replies
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HEY!!! i need help viewing the fx9860g in the parametric mode any1 that can help me. further more i am using this software created by microsoft "microsoft student graphing calulator" it asks me to put it in terms of "t" ny xmples of how to do tht plz help smbdy!!! Farah Alibhai
Last reply by Eternalx, -
- 1 reply
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When I add a trendline to my graph, Excel gives me a R^2 value for the generalted equation and Graphmatica gives me a Chi^2 value. What is the difference between the two?
Last reply by Abu, -
- 0 replies
- 572 views
Microsoft Excel only provides trendlines, equations and R-squared values upto degree 6. (Polynomial Function). Is there any program that would help me find the trendline, equation and R-squared value for a degree 8 polynomial function? I tried the IB graphing pakage and Graphmatica - I'm not too sure on how to use them but I could not find the trendline feature there. I'm trying to model an equation for a set of points.
Last reply by y.v, -
- 2 replies
- 933 views
Okay, so I'm in IB Math Methods SL and my teacher keeps telling us how it's very similar to AP Calculus AB. I'm wondering if I've taken the IB class would I be able to get a decent grade on the AP Calc test without a lot of studying? Anyone tried this before?
Last reply by moneyfaery, -
- 0 replies
- 874 views
Are there any good study books for the math HL test?
Last reply by sAviOr, -
- 5 replies
- 1k views
I was wondering if i investigate the logic behind Sudoku could that be my studies IA?
Last reply by Jillian, -
- 45 replies
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My Math Studies class is a huge joke...I use it to catch up on homework, never paying attention and I ace every quiz. It worries me because I only found out recently that MS is generally looked down upon...do colleges take it into consideration when look at applications? I'm not a Math student in any way, my best subjects are History and English. However I think I'm pretty good at it. Do I need to worry about this? Should I take Pre-Calc Senior year or maybe go one step further and take Pre-Calc over the summer/in my free time so I can take Calculus next year?
Last reply by ezex, -
- 8 replies
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So my math IA is checking to see if there is a correlation between how many romantic commedies that someone watches and the age they expect to get married. it is a working progress, so i dont know if i will actually be able to do it for my final IA, but i need people to take the survey. it will only take a minute. the link is: [url="http://www.surveymonkey.com/s.aspx?sm=hnYp75CE3CN1KymRiJkMuA_3d_3d"]http://www.surveymonkey.com/s.aspx?sm=hnYp...ymRiJkMuA_3d_3d[/url] thanks so much!
Last reply by Chelleee, -
- 1 reply
- 650 views
About a month and a half ago I lost all my data for my IA. Not good. I have not been able to successfully recollect my data and have decided that its time for me to find a new topic. My biggest problem now is that I don't have time, because my IA is due on the 9th. Anyone have a good idea for a topic that I might be able to do quickly and still do well? My teacher keeps telling me all the ideas I'm coming up with arent good enough, so I'm asking you all now.
Last reply by Boatkicker, -
- 2 replies
- 624 views
hi everybody! I'm taking Calc 1 over summer at the university in town, and Calc 2 next year. I was just wondering if anybody knew if when you take HL (Calc 2) in 10th grade, do you have to redo anything...cuz my friend said I would probably need to redo it, and I really don't want to becuz I already have to retake the IB exam for IB physics in 11th, and it would be crazy if I have to redo all the HL and IB stuff I do in 9th and 10th cuz I am doing a bunch of IB and HL stuff in freshman yr(this yr) and next yr. THanks in advance!
Last reply by kman,
