Mathematics
Discussion of everything related to IB Mathematics.
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I just submitted my math portfolio bur realized that i didn't cite my explanation for RMSE, how severe will the consequences be for this?
Last reply by opus92fan, -
- 2 replies
- 5.8k views
Hello, I was tutoring a mate of mine and I came across this problem: Area The included angle of the two sides of constant equal length s of an isosceles triangle is theta. a) Show that the area of the triangle is given by A = 1/2s^2 sin(theta). b) If theta is increasing at the rate of 1/2 radian per minute, find the rates of change of the area when theta = pi/6 and theta = pi/3. c) Explain why the rate of change of the area of the triangle is not constant even though dtheta/ dt is constant. I can find a but I can't figure out how to do b and c. Any suggestions as to solve it?
Last reply by Grassroot, -
- 1 reply
- 1.1k views
Hey everyone, I am currently in first year IB taking HL Math. However, I am struggling a bit with complex numbers in polar form, so I was wondering if you guys could provide some helpful tips/tricks with these types of questions? I always blank out when I attempt to solve these questions. For example, what steps should I take when solving this question: If z is a complex number and |z+16| = 4|z+1|, find the value of |z| Thanks!
Last reply by Duckbeam, -
- 4 replies
- 1.1k views
Hi, quick question. How have you guys set up your Microsoft Equation Editor in your word processor? - and are there any specific requirements? All academic maths articles seem to have equations with similar font and size. Even wikipedia. My equation editor is atm. very ugly - unfortunately. Any help will be appreciated Thx, and good luck with the IB!
Last reply by Duckbeam, -
- 5 replies
- 6.6k views
So, for the Math IA portfolio's, you need to form a general statement - and the problem I have is as thus: If you're just looking at the assignment and can immediately see a pattern forming, and it seems to be correct - how do you explain that? i.e. do you say "from observations, we can see that ...." or should you just completely avoid that and try and find a proper way to prove it? Thanks in advance
Last reply by dessskris, -
- 9 replies
- 2k views
Ok so I want to make a topic containing challenging math questions (kind of math riddles) that stimulate thinking. So the rule is: Once someone put a question no other person can ask another question unless the first question is answered with explanation. And please don't post IB questions. Please don't get the answers from the internet. Try to do it yourself. If you can't, leave the answer room for other students. I hope I was clear. So I will begin: or if you can't see the figure, here is a link: http://i.imgur.com/VlbOC.png In the figure above, B is the midpoint of AC and the center of the green circle. All other labeled points are also the centers of circle…
Last reply by IBCONQUERER, -
- 2 replies
- 1k views
Can anyone tell me where can I find previous exam papers for Grade 10 and 11 IB. Thanks
Last reply by brainworkz, -
- 7 replies
- 1.6k views
Hi, Sorry to add another SL/HL topic to the forums, but I'm quite confused! I'm not incredibly good at math, I'm relatively average - yet I plan on studying computer science at University, and I have been a programmer in languages that require a mathematical/pragmatic mindset since I was 10 years old, I'm now 15, yay. My worry, is that I plan to apply to a university, that kinda really prefers Math HL (MIT), and Math is literally the only subject in which I don't have an A in, at the moment. Though I now have a tutor (started last week) and am redoing my entire textbook, so hopefully that will change with practice. Assuming I take Math SL, and get a high grade, versus…
Last reply by KaranKanwar, -
- 9 replies
- 3k views
For part of my portfolio I worked out some of the possible values using wolframalpha (http://www.wolframalpha.com). Regarding software like this which literally does all of the calculation for you, does anybody know whether it would be against the rules in any way if I use it for my SL maths portfolio, and would marks be docked of for using it rather than doing the calculations manually - providing that I say I use it of course...??
Last reply by Sabs44, -
- 7 replies
- 1.2k views
My teacher haven't taught the class how to use the ratio test. I want to apply the ratio test for my math portfolio and unfortunately it's due on Monday, therefore I cannot ask my teacher how to use the ratio test. I would like to know if L = 0. So far I got up to here: I have no clue what I should do from here. Thank you in advance.
Last reply by rFumachi, -
- 4 replies
- 1.2k views
I'm currently unable to access Word and that converts all fractions like this (1/2) into the stacked format, right? Will I get technology points knocked off if I leave them in the wide version? Sorry if this isn't the right place!
Last reply by dessskris, -
- 20 replies
- 8.8k views
Feel free to post your useful calculator functions that are not so obvious to the average user. I know that only recently have I started using my calculator properly and it helps a lot! For those of you who don't know - you can update your calculator to the newest firmware and it contains many new features! Possibly one of my favourite additions is that you don't have to remember the order to input the binompdf(), normalpdf() etc. as it gives you a wizard now!
Last reply by dessskris, -
Hi I am about to choose my subjects for IB Diploma. I am quite good at maths, but am not sure if I'm good enough for HL maths. Is it possible for me to change from SL maths to HL maths in the middle of the course? (that is if I get good scores and do well in SL) Thanks,
Last reply by citky, -
- 3 replies
- 1.2k views
Math is probably my worst subject. I vowed to improve this year, but I just had my first test today and I know I did horribly. It wasn't because I really didn't understand the concepts, but I made a stupid mistake on one question which was worth three marks, except a similar part of that question appeared in about 4-5 other questions also worth three marks each, so it messed up my calculations from the start and now I know I got a bajillion marks off. But in general, it takes me a lot longer to digest the material, and find solutions to problems than my other friends. A lot of my friends are math geniuses, so I feel especially stupid when it comes to math. Are there any t…
Last reply by ninale, -
Calculator Casio FX 9860 GII
by Guest KAPOWW!!- 1 reply
- 2.7k views
Hey, guys I created this thread becuase the Casio GDC is still picking up in popularity so its not easy finding help on functions, so this can be useful to anyone...provided it stays unpopular Okay, here's my doubt: How do I calculate Compound Interest.( I found it in financial, but what values do I enter where, there's a bunch of weird terms there) Will keep this updated I have 2 more that I can't remember! Cheers !!
Last reply by kiwi.at.heart, -
- 9 replies
- 1.5k views
What was the process of placing you in one of the math levels. At my school the teacher averaged test scores over a semester and if you had a 98% or above, you were placed in Math HL. Just curious how they do it at other schools. My school has pre-IB to prepare you for the real IB, if that changes anything.
Last reply by carpediem, -
- 4 replies
- 10.1k views
I have had some people tell me it's basically an AS-Level in maths, while Maths HL is A2. I have had some people tell me it's halfway between AS-Level in maths, while Maths HL is A2 + AS Further Maths. I have had some people tell me it's approximately more or less an A2 in Maths, while Maths HL is A2 + Further Maths. So which of these approximations are closest to correct, guys? Or are none of them close enough? I need to know, because LSE is being ambiguous with its IB requirements, and basically require an A2 in Maths for this one degree, and I don't know if Maths SL will suffice. Also, a side question: Is Maths Studies basically GCSE level then?
Last reply by Arrowhead, -
- 15 replies
- 8.6k views
Hello guys. I am currently in the ib dp programme (year 1) and so far I have chosen Chem, Bio and Math as my HLs and Eng Lit, Chinese B and Geo as my SLs. However, I am thinking of switching HL math to SL because it kinda seems too difficult for me. I do enjoy math but I don't absolutely LOVE it but I'm afraid that SL may seem less of a challenge for me. Last year, I took the advanced math option (where you complete gr 10 and 11 math in one year) and I got 90% (Gr. 10) and 87% (Gr.11). In university, I would like to study: sciences (possible med), psychology, humanities. So what do you guys think? Please give me some of your advice and opinions. Oh btw, I'll be taking HL…
Last reply by ib2013grad, -
- 3 replies
- 1.8k views
I'm going to choose Math studies and our school is offering us the Pearson books, but I'm not sure if I should buy the one for Math studies or for the Standard Level. I know it may sound kind of logical lol but I remember that our teacher for the past semester suggested us to get the one for the Standard level even if we go to Math studies because it supposedly has about the same topics but with more information, or something like that. Does anyone has experience with these books? I need advice on which one would be the best to get (by the way, I'm very bad at math). Please excuse any mistake in my english, I'm not a native speaker. Thanks!
Last reply by JaeJ, -
- 8 replies
- 2.5k views
Out of curiosity, for those who have finished both their type I and type II assignments (or are currently doing their type II), which one did you find to be more difficult? I realize there are many different combinations of type I/type II out there, so I'm hoping we'll see some sort of general consensus in the poll. This is mainly geared towards HL students, but SL students feel free to comment as well Personally, I found type II much easier than type I. They were about equally time-consuming, but I found the type I to be much more thinking-intensive. Of course, that's just me - what about the rest of you?
Last reply by MR.AHM, -
Switch to SL from SSL
by Guest KAPOWW!!- 6 replies
- 1.5k views
Hey guys, I have to give an exam called 'CET' in India before I can apply for undergraduate anywhere in the country, so the Mumbai University(like the head of all of them) issues subjects we must have(SLs and HLs) to qualify for a course, mine's BvSc (bachelor in Vet.Science) so I'm worried here coz they only have been mentioning SL and HL and I'm currently maths SSL, so: 1) How tough Is the the switch from SSL to SL? 2) If you know any Indian who's giving CET too can you ask him, I really need to know. Thanks a ton!
Last reply by Arrowhead, -
- 1 reply
- 4.3k views
Has anyone tried the Cambridge and/or Pearson IB Math SL books? How are they? Do they give really good explanations? Math is probably my weakest subject, so I want to make sure I have a good textbook for next year. I know my school provides the Cambridge one, but since I'm pretty clueless at math should I buy the Pearson one too, just in case? I liked the Pearson chem HL book, and even though the Pearson bio HL has a lot of stuff you don't need to know, I find the explanations in those good too.
Last reply by Sandwich, -
- 10 replies
- 2.6k views
Does anyone else have this problem? My teacher gives us less than the allotted 10 days, giving us somewhere in the range of 6-8. This is very frustrating for me because I could really use the extra couple days! Is she technically allowed to due this?
Last reply by Peanut Butter Jelly, -
- 2 replies
- 3.2k views
How do I insert a 3 by 4 matrix in Word?
Last reply by Ezeh, -
- 4 replies
- 2k views
Is Summer!! But my recent Math HL grade is extremely low... That I'm determine to study through the books to improve!! I've got these two books: Harris Publications AND Pearson Baccalaureate Which book do you think that will prepare you most to the Real IBO exam in terms of the questions inside? Any other suggested way to study and improve on Math HL? THANKS!
Last reply by jeffreychann, -
- 3 replies
- 2.2k views
like the scientific calculators that do trig in terms of pi for you?
Last reply by expire, -
- 1 reply
- 2k views
Hi guys, Does anyone of you know any complex numbers graphing software? I need one. Thanks in advance.
Last reply by dessskris, -
- 35 replies
- 10.1k views
Hey guys I'm starting IB real soon and I was comtemplating on whether to buy the TI-nspire or the TI-84+ SE. What's the difference in these two calc besides memory ROM? Can you get those handy 'apps' avl for the TI-84+ on the TI-nspire? I will be using the ti84+ keypad on the nspire, but do you think it'll be hard to cope up with anyone using the ti-84/83? Is the TI-nspire permitted in Phy HL & Chem SL? I know it's permitted in Math. I'm pretty new here lol. My main concern was that the TI84+ SE doesn't support Calculus or AP Phy. This comparison chart says TI-Nspire does. I would like to know which calc you recommend. I have no plans of doing AP Calc/Phy, but I want…
Last reply by Slovakov, -
- 5 replies
- 1.7k views
Okay so I'll be switching schools 1 year into IB, and the 2nd school requires that I complete the 2-year IB course over again - but I'll have to do 4 HLs. I've thought about it, and I think thats pretty good, as it'll let me get higher grades in the end by having 1 extra year of IB. So my question is: If a student completes the first year of Math SL, how much of an advantage would that student have if they joined the 2-year HL course? Would it mean HL would be easier? Or would it mean I'd do less work because of the course overlap? Thanks!
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- 2 replies
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Hi, I need help with some computer programs. I have to have a program which would draw and present planes in 3D as I need it for my portfolio. Does anyone know any name of such computer program? I would appreciate any help.
Last reply by Keel, -
- 2 replies
- 3.3k views
Does anyone know if the Prizm Casio Calculator is allowed in IB exams?
Last reply by dessskris, -
- 4 replies
- 6.8k views
How are IB internal exams graded? I know that it is 20% of your diploma grade, but what do you mean diploma grade? Is it 20% of your entire senior and junior grade or is it 20% of your IB exam grade? Can someone tell me?
Last reply by Ezeh, -
- 4 replies
- 2.8k views
Hi, So I am working right now with my mathematics portfolio, and I have some problems with the dessign specifications. Some other comments in this website state that the portfolio (and mostly all of the other IB projects) must be in 1.5 line spacing. If I didn't do it that way, will I get points less? x_x (I also wrote most of them with letter Calibri...) And the other question is: Should the math portfolio have a structure like the science reports? (meaning introduction, variables, objectives, etc) Thanks! :b
Last reply by dessskris, -
- 1 reply
- 2.4k views
How do I draw a 3D graph in Geogebra for my maths type 1 task: systems of linear equations for Part A, investigating 3 by 3 systems? I say Geogebra...because it's free!! And btw, can you answer my question on that particular thread? Thanks.
Last reply by dessskris, -
Portfolio Assignments: How lazy have the teachers got?
by Guest Fusschinski- 11 replies
- 3.4k views
Portfolio assignments are, in comparison to the exam, the easiest way to get great marks for your maths grade. At my school the assignments have not changed since like 1999, as we still use the example ones handed out by the IB for teachers. This could suggest that the teachers have become slightly lazy with them. I do HL maths and we did for our type I task the 'dreaded' "Koch Snowflake" (18/20 ) and for type II we had the mind numbing "Making a Logistics model" (19/20 ). Note though that my teacher in no way is an easy marker, and although the great IB in all their incomprehensible glory will probably find marks to take off somewhere, like they do (some guy in …
Last reply by Daniel Inchan Jung, -
What do you use to get the technology mark for Portfolio? 1 2
by Guest IB_procrastinator- 27 replies
- 6.7k views
Hi all, What program or softwares do you usually use for your math portfolios? Mathematica? AutoCAD? Anyone knows any handy softwares? In my school, the technology mark is very hard to get. Anyone has any good tips?
Last reply by energetic, -
- 3 replies
- 1.5k views
Hi everyone. I'm just starting to write my first Portfolio about Infinite Surds! Now I was wondering if there is any sort of programm which makes it easy to write mathematic equations easily up?
Last reply by IOwnAndPwnU, -
- 0 replies
- 961 views
Srdjan Marjanovic M.biljanica 16201 Manojlovce Serbia Mathematics that you know is limited (this is the result of a large number of axioms), and a few mistakes (this is a consequence of the historical heritage).My math starts with a single axiom (definition point, natural along) all other evidence to innovate. This review is performed math what is new is highlighted in red, what extends the mathematics is marked with green, know what the current mathematics highlighted in black.Invite developers to write mathematical programs that will support my advanced math, thanks. I invite readers of these articles that if you find an error in my evidence (except MS.0, as it is an ax…
Last reply by kumarevo, -
- 1 reply
- 3.1k views
Hi, I was wondering if anyone out there has a subscription to the site ibmaths.com. And if these materials could be made available. Thank you.
Last reply by chrypton, -
- 3 replies
- 1.2k views
Hello everyone, I have just started using the Autograph graph plotting software for my Maths Portfolio. I have made the graph and saved it but am not able to open it again because it seems I do not have the right program installed to open it with. Can someone (probably who has already used the software before) tell me with what I am to open it with? Thank you, Work hard party harder
Last reply by dessskris, -
- 5 replies
- 2k views
Hello, I'm currently in the process of writing my Maths SL IA on Stellar numbers. I have done all the maths behind it and was wanting to know how to set it out. Does anyone have a good template or know where I can look at an old IA to see the formatting? Thanks, Moss
Last reply by dessskris, -
- 1 reply
- 1.4k views
I thought I would open a topic for any questions relating to general topic questions concerning notation and terminology in Math IAs. My question is what is the correct notation for minuscule numbers, e.g. 0.00000000000038127. Do you use sci notation or what?
Last reply by chrypton, -
- 10 replies
- 2.7k views
This is really random, but why is it that some people call HL Math "HL Maths". Is there any difference or is it just something that varies from country to country?
Last reply by genepeer, -
- 11 replies
- 4.7k views
How to calculate best fit line? For example: X values: 1, 2, 3, 4, 5 Y values: 3, 1, 3, 1, 3 How would I find the equation for the best fit line through a mathematical view point (calculus) [y = mx + c]? Edit: Tried google as one could ask me and no good results where found. Best i could find was: http://www.fourmilab.ch/hackdiet/www/subsubsection1_4_1_0_8_4.html; and this did not help me. I used these keywords: calculate best fit line A reply would be highly appreciated. Regards, Zananok
Last reply by Zananok, -
- 42 replies
- 10.8k views
Well what do you think people? when have you achieved a fairly good result? I got 17 points on mine, and I don't know if I shall be happy or sad about it... And what grad does 17 points coronspond to in the 1-7 system? cheers comrads!
Last reply by Lance H, -
- 3 replies
- 10.4k views
So I have to hand in my portfolio this friday... but I DON'T HAVE A CLUE if I'm doing it right because my teacher believes we have some kind of mighty power to solve it without previous instruction. but well that is not the point.. I guess I've got to work it out, and I looked in google for any old sl maths portfolio example, but I was not able to find anything useful Soo... can someone be kind enough to send me or to post any old or an example of a math portfolio type 1 and 2 PLEASEE!!!
Last reply by JoeG, -
- 5 replies
- 1.4k views
Hey guys, I was just wondering if we should use decimals or fractions. Completely forgot. Thanks.
Last reply by Pistons, -
- 1 reply
- 1.1k views
Hey, Can any one point me to website which has questions that relate to IB Math. Are there any free sites out there? All I could find are sites which require you to pay.
Last reply by Austin Glau, -
- 1 reply
- 1.4k views
hii guys what is realy the mathematics portfolio ? is it a project that we have to do it btw i'm taking mathematics studies tell me please what is required form me to do
Last reply by sweetnsimple786, -
- 3 replies
- 1.4k views
Do you wish you could use calculators like TI-89 or TI-nspire CAS in your Math SL or HL class? Or do you think TI-83/84 was just enough? Did you have your TI-89 or TI-nspire CAS just at home to use it to help with your assignments? Was your teacher OK with you having them in class? Or did you not need those calculators and were satisfied with what TI-83 or TI-84 offered you?
Last reply by Austin Glau,
