AEA Prep Thread - 25th June 2015 (Edexcel)

I think I got 60 would that be a merit

Did you manage to find the volume in the last ? I got stuck at integrating cot^4xcosecx

Answers Q1 was x=2 and x=-22/9? Or something like that
q2 x=1/2 only x=-1 does not work squaring brings this solution out but is invalid in first eq.
q3 4,124,192,244
q4 last part was like 509/256 this mite be wrong in fact it is I think.
Q5 last part x=-root8
q6 last part 1/2root30



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Can't have negative solutions to the first questions I think, since ln9 only passes in quadrants 1 and 4 so the graphs only intersect at x=2. But correct me if I'm wrong

No you can. Check it in ur calc. You can see two solutions from your sketch!


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Tinyhobbit and teeem. What do you think of the paper? Hardest questions ? I reckon the trig one was the hardest!


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did anyone get 2root6 for the magnitude of AX??
And for q3, i did all the algebra all the way to cos2x+78=sinx, and then used cosx=sin90-x, but i only got one solution of 4 deg, i cudnt work out any other solutions, how many marks would i get outta 9??

Can someone post a solution to 6c onwards?

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Yh AX is 2root6 I stupidly did OX which is root 30. Damnnnn


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Oh what, I got it right????? I just assumed I had got it wrong

Yh I've dropped 4-5 marks now. So pissed I knew it would be vectors.


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If it helps I flat out didnt answer question 3

I did the last part of last question and made a mistake in the last part of Q4 silly me. Hopefully high 80s low 90s.

Edit: the last part of 4 is right
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