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# OCR (non mei) C4 Friday 24th June 2016 Watch

1. (Original post by notcloseatall)
When drawing the graph on question 9 did we need to include the entire graph or the graph between limits of t?
I did it with limits
2. (Original post by andygeor)
anyone know if parametric integration is on our spec? its in the formula book but have never seen it before in a paper
You have to separate the x and y values on opposite sides and then integrate both sides (the x values dx and y values dy)
3. Did anyone get something like 1-root1/3 for x on 9ii)
4. I dont think that was any easier than June 2014 - I think 57 or 58 for an A*
5. Think i got (1/144)e^-2 for the final answer, was the equations not lny=..+1-3, with c=-3?
6. (Original post by Sid1234)
I dont think that was any easier than June 2014 - I think 57 or 58 for an A*
7. how many marks would be lost in question 9ii for putting non exact answers instead of exact
8. can someone guess the reasonably highest grade boundaries for a star?
9. can any one remember the what we had to differentiate for q3
10. Other than the parametric equation question (((( the paper seemed ok
11. (Original post by connorbarr)
Think i got (1/144)e^-2 for the final answer, was the equations not lny=..+1-3, with c=-3?
You must've made a sign error somewhere it's was c=3 and -1+3

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12. (Original post by daniellon)
can someone guess the reasonably highest grade boundaries for a star?
63, absolute worse case 64 ( but doubt that high, realistically 60-61) but june 2014 was 57 for A* and that was much easier
13. I've checked & amended where necessary the community mark scheme.

All is now correct.

14. (Original post by drandy76)
You must've made a sign error somewhere it's was c=3 and -1+3

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I also made the same mistake. How many marks will I lose approximately?
15. (Original post by btsx)
I also made the same mistake. How many marks will I lose approximately?
****, will be 2 marks, A1 for getting C wrong and A1 for getting final answer wrong
16. What was the question on number 3, can't remember there being an x^2 term in the original equation
17. (Original post by Sid1234)
I dont think that was any easier than June 2014 - I think 57 or 58 for an A*
I've not seen this paper but June 2014 has at least 7 marks which were scored by very few candidates -- checking that the lines were distinct in 5(ii), the last two marks for the graph in 7(iii) and the last four marks in 10(i). From looking at the reactions to this paper it seems that there were no particularly challenging questions, so I would expect higher than that for 90 UMS.
18. What's was Q3 tho? The actual question
19. Can anyone please post what question 2 and 3 was please?
20. Did 9ii ask for exact values?

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