Search found 8 matches

by davet
Thu Aug 14, 2008 1:04 pm UTC
Forum: Mathematics
Topic: Examiner's report for AEA Maths, June 2008?
Replies: 1
Views: 752

Examiner's report for AEA Maths, June 2008?

Anyone got a link to the examiner's report for AEA Maths June 2008? I'm going to be interested to learn how they dealt with question 5b :) Dave

PS If this got double-posted, it was by mistake - sorry!
by davet
Sat Jun 28, 2008 3:10 pm UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

Q7d - centre of incircle is at (3/2, 1, -9/2) unless I'm going mad... 8)
by davet
Sat Jun 28, 2008 10:10 am UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

I thought it could work by choosing complex logs on numerator and denominator of the LHS as well as on the RHS, but you are right!! There is no way integer multiples of 2πi can be chosen to equate the real parts, except if they are all zero, which as you say leaves different imaginary parts. Thanks ...
by davet
Fri Jun 27, 2008 8:14 pm UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

Remember log is multivalued. I think this can be used to equate LHS and RHS although not sure exactly how.

davej
by davet
Fri Jun 27, 2008 10:31 am UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

Yep - I guess doing it that way would suggest say 3-4 marks, but if the longer way were the only way, it would be worth maybe 6-7!! I wonder what proportion of candidates who got the answer used the respective methods? :-) A good question really, because students should have asked themselves what th...
by davet
Fri Jun 27, 2008 12:33 am UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

frimble, I don't know how things went on the questions you did answer, but the grade boundary for a distinction will be around 68-70, to judge by previous years, and don't forget to take into account the S marks. Hard not to get the 1 available for Q1 if you worked out the right answer really! :) (T...
by davet
Fri Jun 27, 2008 12:28 am UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

What was your method for question 6d? I mucked it up in the exam, but have since worked out that the answer should be 51, which tallies with yours. You say it's definitely not worth 5 marks, but my method (after the exam) was lengthy: get the transformed function, differentiate it, equate derivative...
by davet
Thu Jun 26, 2008 5:49 pm UTC
Forum: Mathematics
Topic: AEA Maths Questions
Replies: 58
Views: 4885

Re: AEA Maths Questions

Q2b - answer is (9/4)(x+2)^2/(x+1)

davet

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