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AEA Prep Thread - 25th June 2015 (Edexcel)

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Original post by Bendak
Do you mind posting your answers to Q4 of the 2014 paper? Sorry to be a bother but warwick don't have solutions up for that paper and the mark scheme is very unclear as to what they're doing!


While you wait my answer to first part is on the second page


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Reply 221
Original post by physicsmaths
While you wait my answer to first part is on the second page


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Thanks!
Reply 222
Original post by Bendak
Do you mind posting your answers to Q4 of the 2014 paper? Sorry to be a bother but warwick don't have solutions up for that paper and the mark scheme is very unclear as to what they're doing!


will post it in my "office"
Reply 223
Original post by TeeEm
will post it in my "office"


Any more good sir?
Reply 224
Original post by 11234
Any more good sir?


done? is the answer correct?
Original post by imusti96
According to the part (b) they should've also multiplied by (1-(pq)^n) but they didn't.. i don't get why


Screen Shot 2015-06-24 at 16.02.05.png



Its okay i get it now thanks


1-(pq)^n tends towards 1 as n approaches infinity. Sorry, should have said :smile:
Reply 226
Only AS knowledge on this

corrected the typo/ sorry guys
(edited 8 years ago)
Original post by TeeEm
Only AS knowledge on this


Might be wrong as I haven't attempted the question, but is there a typo in A? Surely g(x) passes through Q anyway
Reply 228
Original post by Gome44
Might be wrong as I haven't attempted the question, but is there a typo in A? Surely g(x) passes through Q anyway


sure...
there is a typo one is a P (copy and paste error)

thanks
Original post by physicsmaths
Ah fair enough that's the standard edexcel booklet. Cheers.


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Just an update: I emailed the exams officer and they said I got 78/100. (Distinction boundary was 68/100.) I was definitely expecting more i.e. 85-95.
Reply 230
Original post by PotterPhysics
Just an update: I emailed the exams officer and they said I got 78/100. (Distinction boundary was 68/100.) I was definitely expecting more i.e. 85-95.

How did you do it. Any tips and where should I do further reading at
f
Original post by TeeEm
sure...
there is a typo one is a P (copy and paste error)

thanks


>touches

So I'm sketching y = x^2 and y = -x^2 for b)?

EDIT: But then P and Q are the same... Bleh
(edited 8 years ago)
Reply 232
Original post by fatart123
>touches

So I'm sketching y = x^2 and y = -x^2 for b)?


P and Q are distinct
Original post by PotterPhysics
Just an update: I emailed the exams officer and they said I got 78/100. (Distinction boundary was 68/100.) I was definitely expecting more i.e. 85-95.


well done!An excellent score nonetheless! Have you checked the MS ? You can probably remember where you might have gone wrong? I am hoping for a score of 80+ aswell. Which is hopefully a distiction unless the paper is like a C4 paper hehe. Your not taking it again are you?


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Original post by TeeEm
P and Q are distinct


Sketch for a = -1, b = 0 then? That seems to work.
Original post by TeeEm
this is an old one of mine


How do you do this?
Original post by TeeEm
P and Q are distinct


May you check this please? 2014 Q6 first part. Because the ms goes the other way. I'm sure my way is fine but not 100%. It is essentially the same thing except suggesting u is a dummy in replacement of x. Instead of using the sub in the expression.
ImageUploadedByStudent Room1435171458.006376.jpg


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Reply 237
Original post by fatart123
Sketch for a = -1, b = 0 then? That seems to work.


..

excuse the bad graphs
Reply 238
Original post by imusti96
How do you do this?


look at post 243
Original post by TeeEm
look at post 243


Thats a different question

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