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official C3 paper thread

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

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Reply 1
Avatar for TheWolf
TheWolf
15
tough paper. The trig question you put the two parts = 3 i think.
Reply 2
Avatar for gangstarr
gangstarr
OP
1
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
Reply 3
Avatar for ArVi
ArVi
13
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)
Reply 4
Avatar for TheWolf
TheWolf
15
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?
Reply 5
Avatar for 2late
2late
13
This C3 paper was a pain when I started it, especially as I just did C2 before and was a bit tired >.<

TheWolf
tough paper. The trig question you put the two parts = 3 i think.


Yup. =)
Reply 6
Avatar for kevla
kevla
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?
Reply 7
Avatar for kevla
kevla
I did this exam on my birthday :'( *gets out violin*
Reply 8
Avatar for sash37uk
sash37uk
1
Did anyone else find the proof question about orchids difficult?
Reply 9
Avatar for gangstarr
gangstarr
OP
1
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
Reply 10
Avatar for smatz01
smatz01
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.
Reply 11
Avatar for 2late
2late
13
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).
Reply 12
Avatar for ArVi
ArVi
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)...
Reply 13
Avatar for ArVi
ArVi
13
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...." :biggrin:
Reply 14
Avatar for 2late
2late
13
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 :tongue:

Sorry but I don't remember the first two differentials :frown:
Reply 15
Avatar for also1412
also1412
did any1 notice that there was only ONE root for the sketch question last bit
Reply 16
Avatar for TheWolf
TheWolf
15
yes.
Reply 17
Avatar for gangstarr
gangstarr
OP
1
yes ....
Reply 18
Avatar for TheWolf
TheWolf
15
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 :tongue:

Sorry but I don't remember the first two differentials :frown:


I tried doing the shorter method but didnt work, so I had to multiply it all out as well. Took ages. ='3
Reply 19
Avatar for gangstarr
gangstarr
OP
1
was weird though - got an unexpected answer (for the root)

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