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# WJEC C3/C4 8th/17th June 2016

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Why bother with a post grad course - waste of time? 17-10-2016
1. (Original post by Maths is Life)
Look at page 5 of the formula booklet under quotient rule. The 7 trigonometric functions need to be differentiated using subsitutions that WJEC usually give. The graphs are: tan^-1, cos^-1,sin*-1,sec,cosec,cot.
If youre unsure just google it 👌👍😀
I have the graphs I just don't have any proofs I never got taught them?
2. I don't think cot sec or cosec have ever been asked as a graph sketching q - although they are on the specification I've never been taught their graphs ahhhh
3. (Original post by 98matt)
I don't think cot sec or cosec have ever been asked as a graph sketching q - although they are on the specification I've never been taught their graphs ahhhh
4. (Original post by 98matt)
I don't think cot sec or cosec have ever been asked as a graph sketching q - although they are on the specification I've never been taught their graphs ahhhh
You don't have to be taught the graphs, just work them out, it's good practice.
5. (Original post by JessyMarie)
I have the graphs I just don't have any proofs I never got taught them?
I dont know if youre lying or probably dont know what proofs are but if youre telling the truth your teacher should be sacked. Do you not a formula booklet?
6. (Original post by Maths is Life)
I dont know if youre lying or probably dont know what proofs are but if youre telling the truth your teacher should be sacked. Do you not a formula booklet?
I know what proofs are as we have them for c2 and yes I have the formula booklet you mean this page right?
7. (Original post by JessyMarie)
I know what proofs are as we have them for c2 and yes I have the formula booklet you mean this page right?
Yeah - tanx to tan^-1 them seven. 1st requires use of quotient rule. Next 3 is chain rule. And last 3 is implicit or respect to y. 😀
8. (Original post by Maths is Life)
Yeah - tanx to tan^-1 them seven. 1st requires use of quotient rule. Next 3 is chain rule. And last 3 is implicit or respect to y. 😀
Right okay thank you
9. (Original post by JessyMarie)
Right okay thank you
Sorry I know I could explain further but Im sure your a mathematical genius gal
10. How did people find it? Easier or harder than recent papers?
That synoptic circles question...
11. I thought it was a decent paper actually. If you've done all previous past papers, you could have done okay tbh.. There wee going to be a a couple of weird questions anyways..
The recurance relation question, was it on radians mode? Please say it was. And then at the end I said its between the 4.5 value..
12. Everything's was fine apart from the circle 3 marker i thought, just couldn't remember any of the formulas from last year
13. (Original post by BubbleLover98)
I thought it was a decent paper actually. If you've done all previous past papers, you could have done okay tbh.. There wee going to be a a couple of weird questions anyways..
The recurance relation question, was it on radians mode? Please say it was. And then at the end I said its between the 4.5 value..
14. I think the examiners from the WJEC must be aroused by flower beds tbh
15. (Original post by Ayaz789)
It was a decent paper! Opinions on Grade boundaries?
Tough paper but easier than the 2015 paper. I think 56-58 for an A
16. (Original post by Jack1066)
Tough paper but easier than the 2015 paper. I think 56-58 for an A
I need an A* :L i think i got 68 will that get me an A*?
17. What did everyone do for 1 (b)?
18. (Original post by Ayaz789)
I need an A* :L i think i got 68 will that get me an A*?

Last year was 62/75 for an A* (90 UMS) in C3, so if you got 68 then that is definitely gonna be an A*.

Even in the easier years (pre 2013) 68 would have netted you an A*
19. Apart from question 5 it was alright paper and 1B is e^1 * your answer
20. What values did you get for a and b in the transformations question?

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Updated: June 23, 2016
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