Summer Glau Posted May 5, 2011 Report Share Posted May 5, 2011 I found this exam to be a bit harder than most of the past P1 exams, actually. The question that really got me was question 10, where we had to graph the cosine function! I think I got two points right and the rest were probably wrong since there were like 5 minutes left so I just drew a wave across my paper haha. The probability question was OK, just that I realized that there was one student who was taking neither art nor music! That threw off my calculations so I had to go back and fix those, which wasted a bit of time How did you guys find it? Reply Link to post Share on other sites More sharing options...
ib_girl Posted May 5, 2011 Report Share Posted May 5, 2011 i thought it was REALLY REALLY difficult...i'd done a ton of practice and still found it that wayi think they did a good job at being tricky/sneaky and combining concepts in unfamiliar ways, which is really unusual for the IBi feel confident about my ability to get some method marks and follow through points though... Reply Link to post Share on other sites More sharing options...
Summer Glau Posted May 5, 2011 Author Report Share Posted May 5, 2011 IB always combines concepts, which my regular textbook didn't do that often *sigh* It got harder towards the end, I thought Section A wasn't that bad. Do you think the whole paper was hard or just a few questions?Yeah I hope I can get some method marks for what I got wrong, sometimes it's amazing what little things they give marks for Reply Link to post Share on other sites More sharing options...
jess1ca Posted May 5, 2011 Report Share Posted May 5, 2011 Oh I wasted time on that probability question too. I drew a complex tree diagram and panicked because it made no sense at all-- then I realized... oh wait... it's not that complicated. Just wondering, how many practise exams did you people do? Reply Link to post Share on other sites More sharing options...
Summer Glau Posted May 5, 2011 Author Report Share Posted May 5, 2011 Yeah that probability question made me waste time I could have spent on question 10 I also realized a few other mistakes when I was going back to check my paper.I think I did about 6 paper 1 exams, all from 2008 onwards. Reply Link to post Share on other sites More sharing options...
jerry.88.lau Posted May 5, 2011 Report Share Posted May 5, 2011 I think that the paper 1 was somewhat easier than many of the past paper 1. I just did 3 past paper 1 2008 and onwards. The only thing that IB put on that was not on any paper was the question on the ln function. Reply Link to post Share on other sites More sharing options...
ib_girl Posted May 5, 2011 Report Share Posted May 5, 2011 we had packets so I had sets of IB problems per curriculum topic...I think I only did one full mockyou? Reply Link to post Share on other sites More sharing options...
Emmi Posted May 5, 2011 Report Share Posted May 5, 2011 I actually thought Paper 1 wasn't too bad, I actually thought it was better than most of the other practice papers I had done (I also did all the papers from TZ1 and a few TZ2s) except that there was a tricky question at the end...I don't remember exactly which one it was, but it was strange. But I think it started off very easy (I love matrices ), anyone else agree? Reply Link to post Share on other sites More sharing options...
Work hard party harder Posted May 5, 2011 Report Share Posted May 5, 2011 I found question 10 really difficult also. Left 12 marks in the whole paper.. Reply Link to post Share on other sites More sharing options...
Emmi Posted May 5, 2011 Report Share Posted May 5, 2011 What was question 10? I don't even remember anymore lol. Reply Link to post Share on other sites More sharing options...
Summer Glau Posted May 5, 2011 Author Report Share Posted May 5, 2011 What was question 10? I don't even remember anymore lol.It was to do with a velocity function...don't remember the exact equation but it was a cosine function.What did everyone do when it said to show D (the displacement) on the graph? Did you just shade under the velocity curve or did you actually draw the displacement function? I shaded under the curve Reply Link to post Share on other sites More sharing options...
Emmi Posted May 5, 2011 Report Share Posted May 5, 2011 Oh I remember now. That one was a bit difficult. For part D I made the part of the line that contained part D squiggly, then labeled it as D. I don't know if you were supposed to shade the area under the curve, but I can't really change it now. Reply Link to post Share on other sites More sharing options...
sukh Posted May 5, 2011 Report Share Posted May 5, 2011 I found question 10 really difficult also. Left 12 marks in the whole paper.. hi aren't you time zone 2 though which means you had a different paperWhat was question 10? I don't even remember anymore lol.It was to do with a velocity function...don't remember the exact equation but it was a cosine function.What did everyone do when it said to show D (the displacement) on the graph? Did you just shade under the velocity curve or did you actually draw the displacement function? I shaded under the curve yep thatz what i am wondering about did it say SHOW or SKETCH does anyone remeberhey guys,i have a quick question what if you get a level 6 on paper 2 and 7 on paper 1 and a high 5 on the IA's what would you get overall??any ideas Reply Link to post Share on other sites More sharing options...
Jackie Posted May 5, 2011 Report Share Posted May 5, 2011 I HATED number 10. The good thing though about problems like that is that you can just do part of it and get credit for knowing how to do some of it. Other than that and one other question (7, I think), I thought the test overall was awesome! Everything else seemed really easy compared to the past IB tests that I practiced. But that's just me. It seems like a lot of my classmates thought it was terrible. Reply Link to post Share on other sites More sharing options...
iMuffinsx3 Posted May 5, 2011 Report Share Posted May 5, 2011 What was question 10? I don't even remember anymore lol.It was to do with a velocity function...don't remember the exact equation but it was a cosine function.What did everyone do when it said to show D (the displacement) on the graph? Did you just shade under the velocity curve or did you actually draw the displacement function? I shaded under the curve Shaded under the curve. I recall slightly that it had something to do with integration right?Thus the area under the velocity from x to __ , yeah? Reply Link to post Share on other sites More sharing options...
Summer Glau Posted May 5, 2011 Author Report Share Posted May 5, 2011 What was question 10? I don't even remember anymore lol.It was to do with a velocity function...don't remember the exact equation but it was a cosine function.What did everyone do when it said to show D (the displacement) on the graph? Did you just shade under the velocity curve or did you actually draw the displacement function? I shaded under the curve Shaded under the curve. I recall slightly that it had something to do with integration right?Thus the area under the velocity from x to __ , yeah?Yeah I believe you would have to integrate the function if you wanted to get the displacement function. And then I was thinking that the area under the velocity curve represents total distance travelled. Hopefully that is right @sukhYou would probably get a high 6 or low 7. Your portfolio is only worth 20% and each paper is worth 40%. Depends on grade boundaries though Reply Link to post Share on other sites More sharing options...
ms.s.peverell Posted May 5, 2011 Report Share Posted May 5, 2011 I found the exam comparable to the other Paper 1s that I practiced, except for the function we were expected to know how to sketch in question 10, 2t + cos2tI did not know how to combine a linear and periodic function. I guess you just sketch both and then add them. I considered that, but had trouble deciding on a scale, because without my calculator, I can't exactly compute radians in my head and then use normal whole numbers as some coordinates too. Hopefully I got 1 or 2 points on the sketching part.As soon as I was done the exam I went to see what the function looked like on my GDC.But I wonder for the last part (D I believe) if it matters whether you used the area under the velocity curve or sketched the displacement function. They are the same thing and can both be represented within that set of axes- you have to antidifferentiate to get both (and so use the same skills and understanding), and they obviously represent the same function, just in different ways. The only other question that took me a bit of time was finding the value of k in the last question of section A (# 7 I think?)- I eventually got it and proved it using the quadratic formula, but it definitely threw me off for awhile. Reply Link to post Share on other sites More sharing options...
Proletariat Posted May 5, 2011 Report Share Posted May 5, 2011 I found this significantly harder than practice exams that I had looked at.The main cause of this though was vectors; it's the one unit that my teacher did a very, very poor job of teaching (handing us a 20-page package to "self-teach" and then one day of review the week before doesn't quite cut it), and it seemed like it constituted a larger-than-usual portion of the exam, which was unfortunate.Not one of the better math exams that I've written in my life, that's for sure. Reply Link to post Share on other sites More sharing options...
sukh Posted May 5, 2011 Report Share Posted May 5, 2011 I found the exam comparable to the other Paper 1s that I practiced, except for the function we were expected to know how to sketch in question 10, 2t + cos2tI did not know how to combine a linear and periodic function. I guess you just sketch both and then add them. I considered that, but had trouble deciding on a scale, because without my calculator, I can't exactly compute radians in my head and then use normal whole numbers as some coordinates too. Hopefully I got 1 or 2 points on the sketching part.As soon as I was done the exam I went to see what the function looked like on my GDC.But I wonder for the last part (D I believe) if it matters whether you used the area under the velocity curve or sketched the displacement function. They are the same thing and can both be represented within that set of axes- you have to antidifferentiate to get both (and so use the same skills and understanding), and they obviously represent the same function, just in different ways. The only other question that took me a bit of time was finding the value of k in the last question of section A (# 7 I think?)- I eventually got it and proved it using the quadratic formula, but it definitely threw me off for awhile.i thought so too that the integration can be drawn as a line or the area underneath so i am kinda confusedi have a very important question is error carried forward in the math exam for instance in the vectors question i messed up with finding the cos x as i messed up a small addition and which had to be carried over to find sin x the question was out of 6 or 8how many marks would i get??also for the question 10 i forgot to add the domain how many marks will be taken off?? Reply Link to post Share on other sites More sharing options...
sukh Posted May 6, 2011 Report Share Posted May 6, 2011 i just wanted to start discussing my exam here. So i am in the Tome Zone 1 region as i live in North America. Paper one was yesterday and i was wondering how everyone found itthere was a 'p' question about the range of k, what did people get??the last question about the graphs how did you draw it?i drew a cubic but forgot the domain how many marks will be taken off b/c i forgot the domainand for the intergral did they say show the intergral on the graph or sketch i just wanted to know as i felt they werent very precise as i drew a line for the displacement while some people shaded at the bottom as it aslo represents the areaand also does ib have error carried forward for math because i made a silly counting mistake and my answer was affected Reply Link to post Share on other sites More sharing options...
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