WJEC C3/C4 8th/17th June 2016

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 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

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

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?

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. 😀

Right okay thank you

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..

It was a decent paper! Opinions on Grade boundaries?

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*?