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# Edexcel C3 Jun 05 - How Did It Go? watch

1. yeah - now what are the differentials of those??
2. Yep looks right.
3. The sin2x+sec2x is right, but I seem to remember the other being {x+ln(2x)}2
4. yeah those are the two equations...so what did u guys diff them to?
5. it was an ok paper i thought, but it was much more harder than a P2 paper.
6. the 1st i got:
2sinxcox + 2sec2xtan2x
anyone else?
7. dy/dx=2sinx.cosx+2sec2xtan2x
and
dy/dx=2{x+ln(2x)}.(1+1/x)
8. (Original post by C4>O7)
dy/dx=2sinx.cosx+2sec2xtan2x
and
dy/dx=2{x+ln(2x)}.(1+1/x)
wa-hey - yeah i got exactly that. nice one
9. (Original post by C4>O7)
dy/dx=2sinx.cosx+2sec2xtan2x
and
dy/dx=2{x+ln(2x)}.(1+1/x)
Yep think I got them. Hope that I didn't forget to put the 2 before the sec2xtan2x ='3
10. Yup thats exactly wot i got although i write 2sinxcosx as sin2x will that make any difference?

tbh thought the p2 exam last june was very hard especially compared to this years c3 that might just be me though
11. (Original post by C4>O7)
dy/dx=2sinx.cosx+2sec2xtan2x
and
dy/dx=2{x+ln(2x)}.(1+1/x)
wait sorry was the 2nd one not:

3{x+ln(2x)}^2.(1+1/x)??
12. Lau why 3?
13. coz the orginial equation was:
(x+ln(2x))^3 was it not?
then bring down the 3 for the power and then the new power of that bracket is 2
maybe i am wrong and got the qu wrong?
14. Hmm cant remember the q, if it was ^3 then youd be right. So doesnt matter
15. yeah its all cool!
wasn't a bad paper. not looking 4ward to C4 next tues though. got economics unit 6 on the monday too :s....and a busy weekend!
never mind...hopefully shouldn't need to many points in C4 for maths anyway.
what u all gonna do this afternoon? I have no more exams this week so may go and relax on the beach
16. (Original post by TheWolf)
Hmm cant remember the q, if it was ^3 then youd be right. So doesnt matter
it was ^3
17. i dunno y, but i found this paper rather hard, normally i sit back and relax when i do C3 and finish with time left but... i was rushing towards the end of this paper, did any one else find that this exam was much more tight on time then the other mocks/past papers?
18. I found it ok. for the question where we needed to find θ between 0 and pi, how many marks do you lose for putting a value above pi (I got the first two correct btw)
19. (Original post by Featherflare)
I found it ok. for the question where we needed to find θ between 0 and pi, how many marks do you lose for putting a value above pi (I got the first two correct btw)
im not sure - maybe 1 at most - but i did that too - i put 6.2 as my other value - oops....
never mind!
20. What an evil paper...*sigh*

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