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# OCR (not MEI) C1 - Wednesday 13th May 2015 watch

1. A boundary guesses?
2. (Original post by Numpers123)
A boundary guesses?
I guess 58. You heard it here first.
3. (Original post by Ubayd53667)
I did this paper how did people find it
I thought it wasn't too bad although I know I made some silly little mistakes which I'm killing myself for, what do you think the grade boundaries will be like?
4. (Original post by Octan)
I guess 58. You heard it here first.
Really? Was it a hard paper then?? I haven't done many others...
5. (Original post by HecTic_H)
Does Mr M release anything for OCR as a mark scheme? If so, anyone want to hazard a guess as for when?
Likely to be tonight or not at all.
6. (Original post by Numpers123)
Really? Was it a hard paper then?? I haven't done many others...
Well it had something new (the last question) combined with that k thing which was quite tricky and seems to have tripped up a lot of people, so add those 2 to the fact that normally the A boundary on a very standard nothing special C1 paper is about 61, you have around 58.
7. (Original post by Numpers123)
Really? Was it a hard paper then?? I haven't done many others...
I would guess more at around 62-64 for an A, it was fairly average.
Likely to be ~68 for 90 UMS
8. (Original post by Octan)
Well it had something new (the last question) combined with that k thing which was quite tricky and seems to have tripped up a lot of people, so add those 2 to the fact that normally the A boundary on a very standard nothing special C1 paper is about 61, you have around 58.
Actually finding three points and an area has definitely come up before, because I remembered it said 'units squared' on the mark scheme which I remembered to put in the exam today. I didn't think the paper was particularly hard or easy, I'd guess 62 for an A.
9. Does anyone know breakdown of marks for last question ?
10. If one of my y co ordinate is wrog bu t my working from then on is fine will i get 3/4
11. (Original post by Patsella)
Does anyone know breakdown of marks for last question ?
I think it was out of 5...

2 for finding 3 points
2 for finding base + perpendicular height
1 for final answer (40 square units)

(Probably)
12. (Original post by Rubberduckiller)
If one of my y co ordinate is wrog bu t my working from then on is fine will i get 3/4
More likely to be 2/4, but you might get the mark depending on the RHS of the markscheme.
I think it was out of 5...

2 for finding 3 points
2 for finding base + perpendicular height
1 for final answer (40 square units)

(Probably)
it was out of 4
14. Hi can I just briefly turn attention to a C2 question I'm having a bit of trouble with (I know it ought to be easy, and I'm sure it is...!)

Can anyone help me out with this:

7x = 2x+1

Solve for x.

So far, I've got up to here:
log7x = log2x+1
xlog7 = (x+1)log2

I have no idea where to go from here! Normally you can just divide by logs to find the x solution and then act as necessary but the way to do this isn't appearing in my head! Thanks!!
15. (Original post by mkwhater)
that is what i got but it is not a right angle triangle answer is 40
Yeah I just realised that, it was only 4 marks though and we'll probably get at least 2 for method and I thought the rest of the paper was pretty easy so fingers crossed!
How did you find the rest?
16. jkijjk
17. hi guys, can anyone remember the questions after question 5 in this OCR C1 Maths exam?? Grade boundaries guys??
I think it was out of 5...

2 for finding 3 points
2 for finding base + perpendicular height
1 for final answer (40 square units)

(Probably)

Posted from TSR Mobile

How are you sure it was 40 square units .Everyone seems to have different answers for that question.
19. (Original post by gabby07)
Hi can I just briefly turn attention to a C2 question I'm having a bit of trouble with (I know it ought to be easy, and I'm sure it is...!)

Can anyone help me out with this:

7x = 2x+1

Solve for x.

So far, I've got up to here:
log7x = log2x+1
xlog7 = (x+1)log2

I have no idea where to go from here! Normally you can just divide by logs to find the x solution and then act as necessary but the way to do this isn't appearing in my head! Thanks!!
From this, expand the right to get:
xlog7 = xlog2 + log2

Collect like terms:
xlog7 - xlog2 = log2

Factorise:
x (log7 - log2) = log 2

Use log rule with subtracting -> dividing:
x (log(7/2)) = log 2

Divide:
x = log2 / log(7/2)

Hope that helped
20. You know for the pqr question, if i got the right points, but made an error in writing it down on a lower line (i changed my (0,8) to (0,4) for some reason) How many marks would i lose, with the right points for p and r and but with an incorrect area (i put down 21 instead of 40)

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