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# The Big 2009 AEA Maths Thread! :) Tweet

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1. Re: The Big 2009 AEA Maths Thread! :)
(Original post by darkness9999)
hmm im stuck with question 7 (b) (AEA 2008)

i just dnt get what they did in the MS ... i asked my teacher but he couldnt help me

can someone point me in the right direction?

MS
Spoiler:
Show

The idea that's being used is that if you go an equal distance in the direction and in the direction from B, you'll end up with a point that lies on the line bisecting the angle ABC, it's hard to explain without a diagram really.

Alternatively, you could find the value of (where is the angle between BA and BC) using the double angle formula, and show that the cosine of the angle between L and AB is equal to this value, and so is the cosine of the angle between L and BC.
Last edited by Mark13; 17-06-2009 at 14:27.
2. Re: The Big 2009 AEA Maths Thread! :)
(Original post by Totally Tom)
start working hard NOW.
thats wat im doin
but the questions r pretty sickenin
an im not sure if wat im doin is right without the MS
if any1 has links to AEA PPs and MS plz post it tks
3. Re: The Big 2009 AEA Maths Thread! :)
(Original post by hussain92)
thats wat im doin
but the questions r pretty sickenin
an im not sure if wat im doin is right without the MS
if any1 has links to AEA PPs and MS plz post it tks

http://www.mediafire.com/?mimwi23midm
4. Re: The Big 2009 AEA Maths Thread! :)
Ahhh I can't get over 40ish! Also, I've run out of papers, does anyone have any similar questions?
5. Re: The Big 2009 AEA Maths Thread! :)
Show that if p is irrational and p = r + q then at least 1 of r or q is irrational
6. Re: The Big 2009 AEA Maths Thread! :)
(Original post by koki234)
Ahhh I can't get over 40ish! Also, I've run out of papers, does anyone have any similar questions?
Go through all the papers again, focusing on the later, harder questions which you couldn't do before?

I think there's usually 7 questions on an AEA paper, with 6/7 being longer than the others. If you can get 1-5 sorted, you'll get a merit. Whether you get a merit or distinction usually comes down to whether you can deal with Q7 or not (most commonly a six-part vectors odyssey).
7. Re: The Big 2009 AEA Maths Thread! :)
im always scraping 70-75 -.-' ... but if anyone runs out of practice papers... just try the special papers... they are similar

(Original post by Mark13)
The idea that's being used is that if you go an equal distance in the direction and in the direction from B, you'll end up with a point that lies on the line bisecting the angle ABC, it's hard to explain without a diagram really.

Alternatively, you could find the value of (where is the angle between BA and BC) using the double angle formula, and show that the cosine of the angle between L and AB is equal to this value, and so is the cosine of the angle between L and BC.
thanks for that
8. Re: The Big 2009 AEA Maths Thread! :)
(Original post by darkness9999)
im always scraping 70-75 -.-' ... but if anyone runs out of practice papers... just try the special papers... they are similar

thanks for that
The 'special' papers??
9. Re: The Big 2009 AEA Maths Thread! :)
(Original post by aeiou81)
The 'special' papers??
Yup... Special Papers (Pre-AEA)
10. Re: The Big 2009 AEA Maths Thread! :)
(Original post by darkness9999)
Yup... Special Papers (Pre-AEA)
Thank you very much!!
11. Re: The Big 2009 AEA Maths Thread! :)
Can somebody explain 4(c) from 2003.
I don't get whats going on at all there, tangents coming from binomial expansions??
12. Re: The Big 2009 AEA Maths Thread! :)
(Original post by NesQuiK.)
Can somebody explain 4(c) from 2003.
I don't get whats going on at all there, tangents coming from binomial expansions??
Just differentiate your expansion .. and see what you get... i think you will notice when you put x=0 all your x terms will cancel out and you are left with the -1 which is the gradient...
13. Re: The Big 2009 AEA Maths Thread! :)
can someone please explain the first part of question 4 on june 2007
14. Re: The Big 2009 AEA Maths Thread! :)
(Original post by chris007as)
can someone please explain the first part of question 4 on june 2007
All you have to do is to use the given substitution and solve the integral ... the trick is to square and differentiate again to get to the given expression...
15. Re: The Big 2009 AEA Maths Thread! :)
(Original post by darkness9999)
All you have to do is to use the given substitution and solve the integral ... the trick is to square and differentiate again to get to the given expression...
thanks Ive figured it out
16. Re: The Big 2009 AEA Maths Thread! :)
the exams in less than 24 hrs
tbh im not even gettin 25 marks only if im luky
any1 else in the same situation?
17. Re: The Big 2009 AEA Maths Thread! :)
(Original post by hussain92)
the exams in less than 24 hrs
tbh im not even gettin 25 marks only if im luky
any1 else in the same situation?
Yeah, I've done absolutely no revision for this paper - had a quick flick through a couple of past papers earlier for a few minutes but that didn't amount to anything worthwhile.

Thankfully this is only required for my insurance uni (and I think I've done enough for my first choice), so I'm trying not to care at all, but at the same time I don't want to come away with a horrendous score.

I think it'd be better if I didn't take it at all
18. Re: The Big 2009 AEA Maths Thread! :)
I am so going to **** this exam up. The past papers are so ******* hard - harder than further maths imo and that was bad enough.
19. Re: The Big 2009 AEA Maths Thread! :)
I hope this year's paper will be similar to june 08 , because that paper was similar to a normal c4 paper with some tricky bits
20. Re: The Big 2009 AEA Maths Thread! :)
i dont think it will be that easy again... its so unfair .... this paper is going to be very hard... (thats what i think)