Mr M's OCR (not OCR MEI) Core 1 Answers May 2015

Sketch $y=2x^2-x-3$

thanks a lot for this - would you be able to post an unofficial question paper so I, and others, can remember the questions to the answers? would be very helpful, thanks a lot

Q3iii) Gain 1 markQ5ii) Lose 1 mark8iii) Gain 1 mark10iii) Lose 1 mark

Hello,
I think for the differentiation question I differentiated to give -(1/3)x^(-2/3) and subbed in -8 to get -1/12. How many marks would I lose?

What do we reckon the grade boundaries will be like then? I thought this was quite a hard paper but maybe that's just me...

I like your username!

Haha thanks.

I was wondering about how many marks I would lose on these questions:

On question 6 I substituted y into the other equation but I rearranged I wrong therefore I got the wrong answers, would I still get one mark or none?

And on 7b, I didn't put the - sign so have I only lost one mark?



Posted from TSR Mobile

How many marks is 100 ums?

For 6) I wrote the y values as 13/3 and -1 instead of -13/3 and 1 but I got the x values correct.

How many marks will I drop?

I expect it will be 72 but no one knows as the papers haven't been marked yet.

Are they usually 72, or have they been 70 or 71 over the past years?