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## Community Reputation

0 Unknown • Gender
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• Exams
May 2013
• Country
Poland

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1. From what I remember I got something like that ;P
2. But actually, Maths was (and is) the subject I am really confident of. I'm really scared of Polish since my results are always fluctuating, and geography (didnt start studying)
3. Up to now, nobody has pointed me any fault, but I always lose 1 or 2 points for some unnecessary things. I really liked the questions on P2 (they seemed difficult, but as u started doing it, they turned out to be eaaasy). (AND I DIDNT DO ANY STUPID MISTAKES LIKE IN P1 where I messed up the first question with stupid intergal lol) EDIT: so i hope to get a 7, since it's vital for fulfilling my university offer...
4. Well, they are notorious of forgetting about pluses and minuses, and we can't do anything. I think that theyll accept both solutions...
5. Well, the equation has a solution +-sqrt indeed, but later on, they wanted a specific solution for y>0 (it was y=1 or 2 i dont remember), and the whole thing was then about working on the region above the y axis (because of this fact)
6. I'm sure that it was 9.5, because they wanted to see whether we can figure out that we need to take square root of this in order to calculate the range... Edit: they asked about number of cats (out of 10000) that have lifespan smaller than 10 yrs.
7. Guys, was variance 9.5 or 9.52 in that question with cats?
8. It was for sure 9.5 ( so that the range was 13.5 plus minus sqrt 9.5) (it was 9.5 years^2)
9. Hah That is the question which i was mega ambigious about. I hope you can answer my amibguity, because then i might get 120/120 marks, and I would feel ****ing good. Q.10: Acceleration was given to be (60-v)/40, and initially the particle was at rest so at t=0, v=0. We were supposed to find the value of v at t=30. dv/dt=(60-v)/40 (60-v)dv/dt=1/40 Integrating both sides would give -ln|60-v|=t/40+c so at t=0, v=0 gives c=-ln60. We have ln|60-v|=ln60-t/40 so at t=30 ln|60-v|=ln60-3/4 |60-v|=e^(ln60-3/4) This gives v=31.7 or v=88.3 because of the absolute value sign. Now this really confused m
10. I did EM Waves and Medical Physics - the only hard thing was noticing that there is a fourth sectipn (I4) in the exam (after a blank page) - my friend did not notice that LOL. My problem was I didnt really know how to formulate the answers (although I knew why the things are and why they are like that) for example in the question with one beam of X ray and few minor in dosimetry in Medical
11. That is the question which i was mega ambigious about. I hope you can answer my amibguity, because then i might get 120/120 marks, and I would feel ****ing good. Q.10: Acceleration was given to be (60-v)/40, and initially the particle was at rest so at t=0, v=0. We were supposed to find the value of v at t=30. dv/dt=(60-v)/40 (60-v)dv/dt=1/40 Integrating both sides would give -ln|60-v|=t/40+c so at t=0, v=0 gives c=-ln60. We have ln|60-v|=ln60-t/40 so at t=30 ln|60-v|=ln60-3/4 |60-v|=e^(ln60-3/4) This gives v=31.7 or v=88.3 because of the absolute value sign. Now this really confused me durin
12. HL Maths is not that bad - I'm from Poland, and in my group of 20 people on MHL there are about five 7s... I get over 90% on mocks without studying because I had nearly all this material in my middle school (I don't know how it in other countries)
13. I guess the best way to study is to do questions from past papers and look for maths theory in regular (non-ib) books, because they are a lot better (imho)
14. Oh, come on ppl! Maths HL is easy lmao o.O
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