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Higher Level Maths 2009(Paper 1): How was it for you?
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I thought it was grand, a few tricky bits that seemed to catch people out, but overall it was definately manageable.
For 7 (c) (iii), i think its the phrasing that caught people out: (show that annes starting approximation is closer to the root). I think this is referring to her taking (2), alot of people (including me at first) took this as her 1st newton-raphson working.:)
What I did was got both of their first approximations, saw that annes was 2.6666, and barrys was 2.5(something), got a bit confused and all that. Then realised that this is the answer to part (iii) - barrys next approximation is closer to the root than annes. So i put a few arrows around the place and made a note to the examiner that i did it backwards and the answer to (ii) was on the next page.
Then i used 2.5 as my own approximation to the root, got it as 2.4444444, showing that Anne's 2 was closer than Barry's 3. Hope thats right...
Don't worry about it, by the looks of it everyone got confused, our teacher said afterwards that more marks will be apportioned for part (i) and for using newton raphson 0 -
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Was a nice paper all in all I thought. I'd say I passed, that's all I wanted at this stage. stayed up all nigh studying and it paid off tbh. couldn't do any integration before, managed quite a bit of it. ****ed up the derive the cone formula. even though I JUST learnt it. I'd get a few attempt marks anyway. could only do the (a) part of complex no.s Q. what was the (b) about? and yeah I can't do de moivre's theorem so
was it just me or was the first algebra ridiculously easy? I think I did something wrong it was so easy. had it done in 5mins.
how did you do the (c) part of the 2nd algebra? I ****ed around a bit with it but got nothing out of it. wish I had my paper still but I left early.
differentiation was fine. did the asymtotes grand I think. didn't know how to prove no tagents were parrallel though. and the newton raphson anne and barry kind of threw me. how did you do the 2nd and third part of that?0 -
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spoonbadger wrote: »Sounds good to me.Correct!xOxSinéadxOx wrote: »one of my friends did anyway. I got the 3 but ****ed up the limit one. I think you're right!
Thanks a million
. . . 0 -
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You have no idea how horrible it feels to know that you won't even get attempt marks for going about 8(c) the wrong way. That's actually a 0/20.
what's question 8 integration? the cone thing? I think I went about it right. going to check now. didn't get it out though
yeah I'd say that feels horrible 0 -
Question 2(c) was dire! I got nq^2/p(n^2+2n+1) ...probably wrong. That's the worst part (c) i've seen in algebra in a long time!
I got that too
and then used it in part (ii) by subbing in p=1 and n=5. Which made no more sense than any other way im afraid, i ended up with q greater than or less than some random assortment of letters
YupFor the asymptotes did everyone else get x=3 and y=0? Please reply and reassure me . . . you could see from the graph that that was right whadabouchasir wrote: »I was wondering about that, did you have to integrate it or is there another way using de moivre's theorem?
I integrated using the other answer0 -
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Folks, forget the paper. Whats done is done. No matter how well it went or how badly it went for anyone, there is nothing you can do about it.
Relax, stop looking for answers and looking stuff up, because at the end of the day, it makes no difference! Throw paper one away and just look forward, post mortems don't help anyone, especially mates who mightn't have done well.
It was a fair paper in my eyes.
Just my two cents.0 -
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I just realised that I never sketched the curve.Anne-Marie!! wrote: »Yup you could see from the graph that that was right
Le bollox.0 -
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this is exactly how i think i got on!Nihilist21 wrote: »I've approximated that I got in the region of 90%, I can't see how I'd get less than 85% - since I had time to go over all my answers. Anyhoo here's a breakdown of how it was per question.
1 = Got it all except C, which I did via the right method just must have made a slip (so should get most of the marks).
2= All except C (ii), clearly others had problems with this too.
3= All of this right I think, I wasn't sure about C (ii) but my friend and I both did it the same way, using the equation for sin3a in the prior question.
6= All correct, except for perhaps a small slip - unsure.
7= Everything up to C (i) was fine, then (ii) and (iii) I attempted.
8= Everything right, was a lovely integration question. So happy the volume of a cone came up instead of an area question. hoepfully get 85. what thats an A2? 0
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