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

C2 Differentiation (optimisation/shapes)

Announcements Posted on
Find your uni forum to get talking to other applicants, existing students and your future course-mates 27-07-2015
Win top prizes in our mega results day giveaway... 24-07-2015
  1. Offline

    ReputationRep:
    For the shapes (optimisation) problems which formulas do you need to know? i.e which shape formulas?

    Do not tell me to look at the specification or the official book. I wouldn't be posting here if they were in either of them.

    Board: Edexcel
  2. Offline

    ReputationRep:
    Which board is this for? My first thought would be to look in the specification too, so if you haven't found it there then there's not a lot I can suggest. Another option is to take every formula that's come up at least once on a past paper or in a textbook question and treat it as examinable, although that's not the perfect solution.

    I know I've always found the volume/surface area of a sphere hard to remember as they're not that obvious, so you can use this rule to help remember them:

    To get from area of a circle to circumference, differentiate with respect to r.
    To get from volume of a sphere to surface area, differentiate with respect to r.

    But note that in general this doesn't work with other shapes.
  3. Offline

    ReputationRep:
    perimeters & areas of: rectangles, squares, triangles, circles and compound shapes of any of them
    surface areas and volumes of: cuboids, cylinders and prisms.
    It's a test of your calculus skills not your shape skills.
  4. Offline

    ReputationRep:
    (Original post by ttoby)
    Which board is this for? My first thought would be to look in the specification too, so if you haven't found it there then there's not a lot I can suggest. Another option is to take every formula that's come up at least once on a past paper or in a textbook question and treat it as examinable, although that's not the perfect solution.

    I know I've always found the volume/surface area of a sphere hard to remember as they're not that obvious, so you can use this rule to help remember them:

    To get from area of a circle to circumference, differentiate with respect to r.
    To get from volume of a sphere to surface area, differentiate with respect to r.

    But note that in general this doesn't work with other shapes.
    Board is Edexcel
  5. Offline

    ReputationRep:
    Circles and all the other shapes.

    But in the MEI board, most of the questions on these come with the formulas like volume/surface area of a cone or something.
  6. Offline

    ReputationRep:
    (Original post by Kravez)
    Board is Edexcel
    I had a look at their C2 papers for the past few years. You'll need these:

    Area of sector
    Area of a circle
    Volume of cuboid
    Surface area of a cuboid
    Area of triangle (0.5*base*height and 0.5absinC)
    Length of arc
    Volume/surface area of a prism/cylinder
    Sine rule
    Cosine rule
    SOHCAHTOA
    Pythagorus
  7. Offline

    ReputationRep:
    (Original post by ttoby)
    I had a look at their C2 papers for the past few years. You'll need these:

    Area of sector
    Area of a circle
    Volume of cuboid
    Surface area of a cuboid
    Area of triangle (0.5*base*height and 0.5absinC)
    Length of arc
    Volume/surface area of a prism/cylinder
    Sine rule
    Cosine rule
    SOHCAHTOA
    Pythagorus
    Thanks.

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 11, 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.

Poll
Have you got a summer job this year?
Results and Clearing

Results are coming...

No sweat. Here's all you need to make sure you're ready

new on tsr

Cure summer boredom

Bargain games for under £20

Study resources
x

Think you'll be in clearing or adjustment?

Hear direct from unis that want to talk to you

Get email alerts for university course places that match your subjects and grades. Just let us know what you're studying.

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