Results are out! Find what you need...fast. Get quick advice or join the chat
Hey! Sign in to get help with your study questionsNew here? Join for free to post

FP3 Radius of curvature of curve

Announcements Posted on
Did your uni tell you porkies? Vote now to have your say (you could win an Apple Watch too). 05-05-2015
Talking about ISA/EMPA specifics is against our guidelines - read more here 05-03-2015
  1. Offline

    ReputationRep:
    Found this in the old P6 papers, adapted to FP3 syllabus. Do explain?

    Find the exact value of the radius of curvature of the curve with equation y = arcsin x at the point where x = (sq root 2)/2.

    The mark scheme gave: [ 1 + (dy/dx)^2 ] / (d2y/dx2). WHY?
  2. Offline

    ReputationRep:
    (Original post by purplesparks14)
    Found this in the old P6 papers, adapted to FP3 syllabus. Do explain?

    Find the exact value of the radius of curvature of the curve with equation y = arcsin x at the point where x = (sq root 2)/2.

    The mark scheme gave: [ 1 + (dy/dx)^2 ] / (d2y/dx2). WHY?
    I have no clue!
  3. Offline

    ReputationRep:
    (Original post by GreenLantern1)
    I have no clue!
    Hahaha neither do I!
  4. Offline

    ReputationRep:
    (Original post by purplesparks14)
    Found this in the old P6 papers, adapted to FP3 syllabus. Do explain?

    Find the exact value of the radius of curvature of the curve with equation y = arcsin x at the point where x = (sq root 2)/2.

    The mark scheme gave: [ 1 + (dy/dx)^2 ] / (d2y/dx2). WHY?
    I'm pretty certain this isn't on any FP3 syllabus. Which exam board are you on?
  5. Offline

    ReputationRep:
    (Original post by hassi94)
    I'm pretty certain this isn't on any FP3 syllabus. Which exam board are you on?
    Edexcel, sorry! Should have mentioned. Something similar to this is also in FP2 2006 past year. I hope it's an old syllabus thing!
  6. Offline

    (Original post by purplesparks14)
    The mark scheme gave: [ 1 + (dy/dx)^2 ] / (d2y/dx2). WHY?
    Typo.
  7. Offline

    ReputationRep:
    (Original post by purplesparks14)
    Edexcel, sorry! Should have mentioned. Something similar to this is also in FP2 2006 past year. I hope it's an old syllabus thing!
    Well I'm pretty sure the formula should actually have a ^3/2 in there so it's not correct, furthermore I don't think it's on your syllabus. According to the specification there is absolutely no mention of radius of curvature in Edexcel FP2 or 3.

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 7, 2012
2015 general election
New on TSR

Is your uni telling porkies?

Or is it a hidden gem? Help us find the most honest unis.

Article updates
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.