OCR A Maths C1 & C2. How did it go?
Discussion for A-Level students and for those choosing their A-Level subjects.
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Re: OCR A Maths C1 & C2. How did it go?
Only did C1 (OCR) myself. Found some of it annoyingly tricky. Certainly seemed harder than all the past papers, but then that's always the case I suppose.
What did everyone get for question 7, part where it asked for y=x+c?
Also, question 8 part 1: Show that A=2x^2+32/x....couldn't do that one.
And finally, the last question, what did you get for the equation of the tangent?
I got something like 6x+8y-16=0 (rough guess, I'm not sure about the constant) -
Re: OCR A Maths C1 & C2. How did it go?
I did both of the exams today. C1 was a reatke from January, and I thought it was absolutely soo hard!! It was much harder than the January one, where I got a D
I did not understand the one about the cuboid at all! And just got soo randomly confused with most of the questions!
Luckily I found C2 reasonable. I think i'LL have scored quite highly on that one, hopefully to mkae up for a DREADFUL c1!! -
Re: OCR A Maths C1 & C2. How did it go?
OCR A C2 = Exam code 4722/01? If so, then I found it easy. Only question that I had any doubts about was the one where it asked you to sum the first 100 terms of the sequence. As it was oscillating I just summed it as 2*50 + 2*-1 = 50. Will that do or was there a 'proper' formula for doing it?
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Re: OCR A Maths C1 & C2. How did it go?
I found C2 absolutely IMPOSSIBLE. But I get the feeling I did WAY better on C1, so hopefully it'll all even out and I'll get a B or a C..which sucks, 'cause I was hoping for an A. Looks like I'll be retaking C2 come January!
Last edited by xlouisedoll; 06-06-2006 at 18:14. -
Re: OCR A Maths C1 & C2. How did it go?yeh i got confused on that question, as well as all the others. didnt no whether to use the AP or GP formula.. cos theres Sn=n/2[2a+(n-1)d] for AP and there's Sn = a(1-r^n) / 1-r for GP(Original post by m00c0w06)
OCR A C2 = Exam code 4722/01? If so, then I found it easy. Only question that I had any doubts about was the one where it asked you to sum the first 100 terms of the sequence. As it was oscillating I just summed it as 2*50 + 2*-1 = 50. Will that do or was there a 'proper' formula for doing it?
but overall i thought that paper was absolutely impossible and i've definately got to retake it, as well as S1... yay
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Re: OCR A Maths C1 & C2. How did it go?(Original post by mullabc.02)
when you sketch the curves do you have to use graph paper, because I compltely forgot about it and sketched the graphs in my booklet. I still labelled the axis though. Is that OK
oh ****e, i did that too... i did the tinest drawings, like 2cm by 2cm...didnt even think about the graph paper....whoooooops -
Re: OCR A Maths C1 & C2. How did it go?
Anyone have a set of answers for C1? I'll put down some of what I can remember:
1:i) Gradient=18/3=6
ii) dy/dx= 2x+1; When x=3, gradient= 7
6. i) This part was a substitution, let y=x^2
iv) Think I got one turning point when x= root 5...
7. At the end of it all I got c=-5
8. i) Couldn't do
ii) Differentiated for DA/dx...can't remember the result
iii) Let DA/dx=0. Came out as 2 for me.
9. Got the final equation of the tangent to be something like what I posted above. -
Re: OCR A Maths C1 & C2. How did it go?I was unsure about that too. I thought that was a bit too easy for a 3 mark question so i used da fourmula by summing up consecutive terms and the difference was zero and I got 50 aswell!(Original post by m00c0w06)
2*50 + 2*-1 = 50.
But everything after that was piss easy!
The geometric question about the money in the bank was a bit wierd. What answer did everyone get?
I couldn't work out the first part of the question about that cube, please enlighten me
I did not understand the one about the cuboid at all! And just got soo randomly confused with most of the questions!
