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OCR MEI - C1 - 13th May 2015 watch

1. No worries. How did you find the paper?
2. I'm currently fighting an internal battle of wondering whether to look at the unofficial mark scheme or to remain in my blissful state of ignorance... I want to look but then I'll kick myself if I've made mistakes...
Spoiler:
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I give it five minutes before I look
3. What do people think will be full UMS?
4. Accidentally put a - in front of the 2 on 8ii :/ how many of the marks will I lose for that?
5. seemed to have got 72 based on the mark scheme
6. Where's is the unofficial mark scheme please
7. Wow, I worked out the perpendicular line instead of the parallel line for question 2 for some reason -____- That's 5 marks gone...
8. (Original post by StrangeBanana)
check the unofficial mark scheme, if you don't get the answers you are wrong m8
Where can I find this please?
9. Harder than usual, when I did a mock exam on June 2014 it was way easier than the paper today!
10. (Original post by Slenderman)
For question 12, part iii. Is k=5 , 100% correct. I got that bit but I didn't get part i (I used the discriminant but I forgot that the minus k attached onto the 3....)
Part i) the answer was k>14/3
11. (Original post by PaulShrimpton69)
They're altering it for this year, just remember to take it with you as you're not allowed to go and get one afterwards and for the C2 standard questions you'll need it
Turns out we didn't need a calculator, nor did any c2 come up.
12. Guys for the proof question for the ABCD one. I said something like it is false because other quadrilaterals like rectangles can have 90 degrees. Is this enough, or is it too vague / wrong?

And for the other one I said that you can have a fraction being squared or something.. I don't know. I forgot what an integer was XD. At the time I either thought it was a whole number or a positive whole number. Anyways I said something on the lines of about a fraction..

Can someone post the full description of that? Like what you needed to say.
13. (Original post by FM2196)
6 marks. It involved working our the grad and midpt that's why

Posted from TSR Mobile
I worked out the midpoint but did not get that..B (21,0) E(0,7) the midpoint was some fraction. But i defo did not get y=3x-28

Posted from TSR Mobile
14. (Original post by JuliusSeizure)
I worked out the midpoint but did not get that..B (21,0) E(0,7) the midpoint was some fraction. But i defo did not get y=3x-28 Posted from TSR Mobile
Well you get the mid point (10.5,3.5)

y-y1=m(x-x1)
y-3.5=3(x-10.5)
y-3.5=3x-31.5
y=3x-28

The gradient is 3 because you worked it to be -1/3 so you just flip it around because it asks about the bisector.
15. (Original post by TurkeyKnobblers)
Attachment 397715
Wow, cheers for saving that, that was a close one!
16. (Original post by SamL123)
Where's is the unofficial mark scheme please
Look at the quote in the post above.
17. (Original post by Slenderman)
Guys for the proof question for the ABCD one. I said something like it is false because other quadrilaterals like rectangles can have 90 degrees. Is this enough, or is it too vague / wrong?

And for the other one I said that you can have a fraction being squared or something.. I don't know. I forgot what an integer was XD. At the time I either thought it was a whole number or a positive whole number. Anyways I said something on the lines of about a fraction..

Can someone post the full description of that? Like what you needed to say.
Rectangles' diagonals don't intersect at 90°, a good example would be a rhombus or kite. And for the second, giving an example such as x² = 2 would prove that x is not always an integer when x² is.
18. For question 12ii I did error with sign so got the min value as -2,3 instead of -2,1 would they give me error carried forward for the next part or would I lose the two marks
19. Damn lost 2 marks on 9 part 2. So annoyed..
20. I actually hate myself I did a mock yesterday and got full marks and I made stupid mistakes on this paper because I panicked in the exam so definitely haven't got my A :-(

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