Results are out! Find what you need...fast. Get quick advice or join the chat
x

Unlock these great extras with your FREE membership

  • One-on-one advice about results day and Clearing
  • Free access to our personal statement wizard
  • Customise TSR to suit how you want to use it

Mr M's OCR (not OCR MEI) Core 2 Answers May 2012 <strong><font

Announcements Posted on
Rate your uni — help us build a league table based on real student views 19-08-2015
  1. Offline

    ReputationRep:
    Mr M for 7ii I got positive the answer you put not negative
    How many marks would I lose?
    And for 5b I misread the first 9 for 19 :facepalm2: but did the rest ok how many marks would I lose there?
    Thanks
  2. Offline

    ReputationRep:
    (Original post by Mr M)
    none
    yay!!!
  3. Offline

    ReputationRep:
    (Original post by Mr M)
    [B][U]]ks)
    hey how much do you think will be lost for Q4, i found 2 extra values... including the ones you've given, i hope it's just one..

    also for 7B, i found 3 root 3 over 8, however i put this value into Siny to get 40 degrees something, would i still get all the marks.. ?

    Thanks so much for the answers btw, really appreciate it.
  4. Offline

    ReputationRep:
    (Original post by matty b)
    what are the marks for on q's 9aii, 9bii , 8ii and 7aii? i know there's an answer mark, but what about the method marks?
    the mark scheme hasn't been finalised yet so no-one knows
  5. Offline

    ReputationRep:
    (Original post by IShouldBeRevising_)
    Hey do you remember what the last question was by any chance, I mean the last part of the last question one that was worth 5 marks.
    the questions are here

    http://www.thestudentroom.co.uk/show...003552&page=18
  6. Offline

    ReputationRep:
    (Original post by AKayaker)
    Hi Mr M
    For the alpha beta question there was a cheat method on the calculator
    For the alpha if you did (cos(tan-1(0.4)))^2 the calculator gave you 25/29 so you could just write down the answer as sqrt(25/29)
    the same thing also worked for the beta question
    This method meant I had hardly any workings, will I get all the marks for the answer, also will I lose marks as I think i forgot to change both down to surds (I left them as 5/sqrt(29) and -sqrt(40)/7 ) as it didn't say in the question it had to be simplified and I stupidly forgot
    They are exact values so should be fine.
  7. Offline

    ReputationRep:
    Messed up a bit, probably got somewhere in the high 50s, but could have done with high 60s really.
    How come you couldn't have 270 for question 4?
  8. Offline

    ReputationRep:
    (Original post by jodiedoodles)
    pretty sure a was log (base 2) 27, r was log (base 2) y

    It was definately those two, just can't quite remember which was around!
    Yeah it was them thanks
  9. Offline

    ReputationRep:
    (Original post by JessLamb)
    why are these correct? i'm confused how you got those answers?
    Q4) solve 4cos^2+7sinx-7=0, between 0 and 360

    4(1 - (sinx)^2 ) + 7sinx - 7

    = - 4sinx^2 + 7sinx - 3 = 0

    4sinx^2 - 7sinx + 3 = 0

    (4sinx - 3) (sinx - 1) = 0

    therefore sinx = 3/4 and 1

    sin^-1(3/4) = 48.6 and (180 - 48.6)

    sin^-1(1) = 90

    therefore, x = 48.6, 90 and 131.4
  10. Offline

    ReputationRep:
    (Original post by jodiedoodles)
    Mr M , for the last question I must have done something stupid somewhere as I worked out y = 6, and substituting this back in got -3 (we wanted 3) . I think I've just messed my signs up somewhere, but I'm pretty sure I done the same working as my friend who got the correct answer as 2/3 (I think?)

    Would I still gain method marks, and lose the answer mark? How many marks do you estimate I would lose here?

    Thanks!
    Lose no more than 2 marks.
  11. Offline

    ReputationRep:
    (Original post by Mr M)
    They are exact values so should be fine.
    Mr m I did not write 15 (CM) for the radius question I just wrote 15 will I still get the marks
  12. Offline

    ReputationRep:
    (Original post by sj_1995)
    If, foolishly, I did (3+2x)^5 - (3-2x)^5 instead of plus, would I get any marks? Im sure i read somewhere in an Old OCR mark scheme there was a mark for correct working put incorrect question copying!

    Or am I dreaming....

    Other than that really happy with the paper!
    Just lose one mark if you did your calculation correctly.
  13. Offline

    ReputationRep:
    Hi Mr M,

    For question 4, I used the right trig identities and got to 4sin^2x - 7sinx + 3 = 0 (not sure if I've remembered it correctly) but then I must've stupidly factorised it wrong and ended up with x= 30, 150.

    Do you think I'd get any of the 6 marks, seeing as my method was correct(ish)?

    Thankyou!
  14. Offline

    ReputationRep:
    (Original post by halii_94)
    Mr M for 7ii I got positive the answer you put not negative
    How many marks would I lose?
    And for 5b I misread the first 9 for 19 :facepalm2: but did the rest ok how many marks would I lose there?
    Thanks
    Lose 1 mark

    Lose only 1 mark if you are lucky
  15. Offline

    ReputationRep:
    (Original post by Mr M)
    Lose no more than 2 marks.
    Thanks! Sorry to be a pain but do you have any idea how many raw marks around 75-80 UMS would need?
  16. Offline

    ReputationRep:
    (Original post by peachesandcream77)
    hey how much do you think will be lost for Q4, i found 2 extra values... including the ones you've given, i hope it's just one..

    also for 7B, i found 3 root 3 over 8, however i put this value into Siny to get 40 degrees something, would i still get all the marks.. ?

    Thanks so much for the answers btw, really appreciate it.
    Just lose 1 mark and then get full marks
  17. Offline

    ReputationRep:
    Hello Mr M,
    If I wrote 2sqrt10/7 for 7(ii), how many marks will I lost?
  18. Offline

    ReputationRep:
    On the last question I got y to equal -1 would I get any method marks or none at all?

    This was posted from The Student Room's Android App on my HTC One X
  19. Offline

    ReputationRep:
    (Original post by Ursin)
    Messed up a bit, probably got somewhere in the high 50s, but could have done with high 60s really.
    How come you couldn't have 270 for question 4?
    It isn't a solution - I don't know where your 270 came from?
  20. Offline

    ReputationRep:
    (Original post by IShouldBeRevising_)
    Mr m I did not write 15 (CM) for the radius question I just wrote 15 will I still get the marks
    The answer is 15. That's correct.

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: May 25, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

New on TSR

Rate your uni

Help build a new league table

Poll
How soon after finishing your degree did you get a job offer
Study resources
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.