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# AQA Core 3 - Thursday 6th June 2013 (AM) - Official Thread watch

1. (Original post by Dirtybit)
For inequalities did u guys get x less than or equal to one and then x is greater than or equal to one ?
And for the question on the intercepts about ln bla bla the 2nd last part where it says find fg(x) in a certain form, anyone remember the answer?
I got 1<x<3
2. (Original post by esen212)
One of the many questions that confused me was the secx 5 one I only got two answers and that seems wrong for a 7 mark question... can any one clarify please
I think you should have got sec x = -1/3 and sec x = 3 and so cosx=-3 and cosx=1/3 and you can't have cosx=-3 and so you can only have cosx =1/3 !

I think a lot of the marks will go towards the beginning part using the identity and then also saying that cosx does not equal -3.

Hope that helps!
3. (Original post by muhtaq11)
Guys what was the first integration question on the last page?
It asked you to integrate lnx by multiplying by 1. Xlnx-x I believe was the answer. Not sure about the next one (lnx)^2 it got complicated.
4. (Original post by Lay-Z)
I got 1<x<3
I got 1>x>3
5. (Original post by GeneralOJB)
I got that too. You had to discard one of the values and the remaining value yielded 2 x solutions.
Pheww, do you remember the value that had no solution? I put -3
6. I got 53 and a third pi for the volume of revolution question but then changed it into a top-heavy fraction and put 159 over 3 pi.

And what makes it worse is that you didn't even have to change it anyway.
7. for the trig question, did anyone get 1.45 and 4.83?
8. (Original post by coriander)
for the trig question, did anyone get 1.45 and 4.83?
I got 1.23 and 5.05
9. (Original post by swatson106)
I got the same, cant have cos-1 of -3.
yess i got that, thanks.
it just seemed too easy for 7 marks
10. (Original post by Relf)
I got 2, there were to values for cosx but one had no solutions, I think?? Answer was 5.05 and 1.??
yep i got 5.05 and 1. something Thanks
11. /
(Original post by Alexandra1995)
I got 1.23 and 5.05
erm lets hope i get some method marks... was your quadratic before -sec^2x+8 secx +3 ?
12. what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
13. that was a pretty hard paper i think, harder than the jan paper at least!
grade boundaries i think are going to be
60 for an A
53 for a B ?

i think i've dropped roughly 15-20 marks
14. (Original post by esen212)
Pheww, do you remember the value that had no solution? I put -3
Yep, think it was!
15. why neg me? i am pretty sure i got 73 - can't i be confident?

oh well
16. (Original post by Gary)
what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
The answer is 2ln(3/2), checked on calculator + teacher confirmed.
17. (Original post by Gary)
what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
it was definitely 2ln(3/2)
18. (Original post by Dirtybit)
The answer is 2ln(3/2), checked on calculator + teacher confirmed.

(Original post by A-New-Start)
it was definitely 2ln(3/4)
damn... think i dropped like 4/5 marks for last question then -.-
19. (Original post by Gary)
what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
I got 2ln2 + 2 you?

Posted from TSR Mobile
20. (Original post by Briz)
I got 2ln2 + 2 you?

Posted from TSR Mobile
samee. but a lot saying its 2ln(3/2) D:

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