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Edexcel C4 Monday 25th January 2010 (AM) watch

1. Anyone else get 7.37 for Q2, B) ?

And Q3, C) as 2x+3y-pi=0?
2. (Original post by sulexk)
Hello there, how did you find the c4 paper?

anyone make an unofficial solution paper?

thanks!
I found it pretty easy tbh (even though i did a silly mistake on 8)b)) and i cba to do the exam again, but i can solve a question or 2 for you.
3. 8b - any ideas on the correct answer?

thank you!
4. (Original post by ojpowermake)
Anyone else get 7.37 for Q2, B) ?
Yeah i think youre right, it was 7.something (i found another silly mistake how many marks do i lose for not writing the answer to 2dp?)
5. (Original post by ojpowermake)
Anyone else get 7.37 for Q2, B) ?

And Q3, C) as 2x+3y-pi=0?
I think you got 3)c) wrong cant remember the right answer, but i definitely didnt get -Pi for C
6. (Original post by hussam1992)
I think you got 3)c) wrong cant remember the right answer, but i definitely didnt get -Pi for C
i remember get a gradient as -2/3 i think i got that to
7. i think i got -2pi for c
8. (Original post by sulexk)
8b - any ideas on the correct answer?

thank you!
For 8)b) you would times your answer for part a) by 16Pi
I got 8)a) as 1/4[(root3)-1] so b) would be 4Pi[(root3)-1]
9. (Original post by raag11)
i think i got -2pi for c
Yeah i think i got that also
10. Will there be an unofficial markscheme, some time later this evening or by tomorrow morning, usually then it is much more easier to deduce whether marks were gained/lost.

thanks!
11. (Original post by ojpowermake)
Anyone else get 7.37 for Q2, B) ?

And Q3, C) as 2x+3y-pi=0?
2b is right

there was a 2pi there somewhere. cant remember exactly
12. any ideas for the last part of the vector question
13. hey there

what did you guys get for the area of the loopy thing? Question 7 i think. I got 324 but does it have to be doubled??

And also the length of vector AY i got 29.7 or 27.9 something like that??
14. (Original post by keeranj)
i remember get a gradient as -2/3 i think i got that to
15. who releases the unofficial mark scheme? is it a teacher that does it nd posts it up or sumthing?
16. (Original post by Anonymous0155)
2b is right

there was a 2pi there somewhere. cant remember exactly
it was 2x+3y-2Pi=0
17. (Original post by hussam1992)
I think you got 3)c) wrong cant remember the right answer, but i definitely didnt get -Pi for C

Yer i got it wrong. Went insane and used pi/3 instead of pi/6 when working out tangent, darn.
18. anyone for the last vector question? and the area of the loop?
19. (Original post by sulexk)
any ideas for the last part of the vector question
yeah you shouldve drawn it and used the sin or cosine law/rule to get:

(AY/sin90)=(4root26)/sin(90-angle of feta)

you had cos feta = 19/25

cant remember how i solved it exactly, but i think it was either 21.7 , 27.9 , 27.1 or 29.7 (sry for not being precise)
20. I can remember getting 7614/something

for Q(7) but I cannot recall the denominator, sorry

thanks!

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