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# official C3 paper thread watch

1. dont know if its already been started - well i cant find it anyway !

how was it ??

i found it really quite challenging

- for the trig question that you had to solve in radians
did you have to put two parts = to zero ?

well im sure some of the maths beasts on here will post up the solutions
2. tough paper. The trig question you put the two parts = 3 i think.
3. i cant remeber it all that clearly - but it was slightly different to usual examples wasnt it - the thing u had to put in was inside a bracket itself
4. yeah, you had to use the answers to all the parts above to get one equation... Final answers (in radians) were 0 and 2.12 ... (i think)
5. That's what i got at the beginning. But thats when you but the R equation =0. I was kinda sure you put it to = 3?
6. This C3 paper was a pain when I started it, especially as I just did C2 before and was a bit tired >.<

(Original post by TheWolf)
tough paper. The trig question you put the two parts = 3 i think.
Yup. =)
7. Yeah I did the same for it, got 2.12 radians and some other answer but i dont think that it was 0 radians. Anyone remember any more answers that they wanna share?
8. I did this exam on my birthday :'( *gets out violin*
9. Did anyone else find the proof question about orchids difficult?
10. i definitely got 0 for one trig question - cant remeber if i got 2.12
but none of the papaer was clear cut - if u know what i mean

the values where all weird ie no sin 45/cos 30 / tan 60 for example.

for R who got root 50 something
11. the trig was EVIL...R was root 52...but still it was weird. and oh that one mark question ....it took me a while to get it. how did ever1 else find out.
12. Hehe yeah the trig was nasty. I opened the paper and I was amazed by the number of questions revolving around the trig, which at first made me freak out :P And yeah, R was root52 (or 2root13).
13. that really long trig question with all the proofs scared me. I glanced through the paper before starting to answer and I was like "omg how on earth will i prove that!"... but it turned out to be real easy (factorising)...
14. btw, does anyone remember the final answers for the two differentials (the ones before the differential proof)... That proof was an easy 6 marks!.. I love questions that say "show that...."
15. Hehe I started expanding all terms (silly me) but then I realised there was a common factor for both terms on top of (x-1) before multiplying it all out, so I cancelled it with the denominator. Had to ask for an additional sheet as I crossed out my original working

Sorry but I don't remember the first two differentials
16. did any1 notice that there was only ONE root for the sketch question last bit
17. yes.
18. yes ....
19. (Original post by 2late)
Hehe I started expanding all terms (silly me) but then I realised there was a common factor for both terms on top of (x-1) before multiplying it all out, so I cancelled it with the denominator. Had to ask for an additional sheet as I crossed out my original working

Sorry but I don't remember the first two differentials
I tried doing the shorter method but didnt work, so I had to multiply it all out as well. Took ages. ='3
20. was weird though - got an unexpected answer (for the root)

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