Hey there Sign in to join this conversationNew here? Join for free

Core Maths 3: Integration to find a volume

Announcements Posted on
    • Thread Starter
    • 3 followers
    Offline

    ReputationRep:
    Hi there

    Please could someone check the below, as I am getting a different answer to whats in the book;



    Many thanks
    • 52 followers
    Offline

    ReputationRep:
    You have substituted incorrectly on the final line
    • Thread Starter
    • 3 followers
    Offline

    ReputationRep:
    (Original post by TenOfThem)
    You have substituted incorrectly on the final line
    Sorry to be a jummy but please could you tell me how I have gone wrong.

    Thank you
    • 52 followers
    Offline

    ReputationRep:
    2 squared = 4

    1/2 of 4 = 2

    2/2 = 1


    you got 1/2
    • 1 follower
    Offline

    ReputationRep:
    edit: my bad ignore me im being blind sorry

    shouldnt you be integrating  (\pi x^2) dy instead of  (\pi x) dy ?
    • 52 followers
    Offline

    ReputationRep:
    (Original post by just george)
    shouldnt you be integrating  (\pi x^2) dy instead of  (\pi x) dy ?
    she did
    • 1 follower
    Offline

    ReputationRep:
    (Original post by TenOfThem)
    she did
    I see, sorry ignore me im being blind.. happy easter
    • 52 followers
    Offline

    ReputationRep:
    (Original post by just george)
    I see, sorry ignore me im being blind.. happy easter
    T'is the chocolate
    • 1 follower
    Offline

    ReputationRep:
    (Original post by TenOfThem)
    T'is the chocolate
    its good stuff though.. malteasters.. nomnomnom..

    • 52 followers
    Offline

    ReputationRep:
    (Original post by just george)
    its good stuff though.. malteasters.. nomnomnom..

    I got a malteaster egg with malteaser bunnies in it
    • 327 followers
    Offline

    ReputationRep:
    (Original post by TenOfThem)
    I got a malteaster egg with malteaser bunnies in it
    I got a malteaser egg with malteasers in it.

    • 52 followers
    Offline

    ReputationRep:
    (Original post by Mr M)
    I got a malteaser egg with malteasers in it.

    Was yours not a malteasTer egg ... check the box
    • 327 followers
    Offline

    ReputationRep:
    (Original post by TenOfThem)
    Was yours not a malteasTer egg ... check the box
    Nope.
    • 52 followers
    Offline

    ReputationRep:
    (Original post by Mr M)
    Nope.
    • Thread Starter
    • 3 followers
    Offline

    ReputationRep:
    ok yeah I see what I did wrong, thank you

    Happy Easter to you all xxx
    • 36 followers
    Offline

    ReputationRep:
    (Original post by Mr M)
    ..
    (Original post by TenOfThem)
    ....
    Do you both work at the same school?
    • 52 followers
    Offline

    ReputationRep:
    (Original post by boromir9111)
    Do you both work at the same school?
    No
    • 10 followers
    Offline

    ReputationRep:
    (Original post by boromir9111)
    Do you both work at the same school?
    Haha.

    Cheeky.
    • 327 followers
    Offline

    ReputationRep:
    (Original post by boromir9111)
    Do you both work at the same school?
    No but I've known her for about 10 years online.
    • 36 followers
    Offline

    ReputationRep:
    (Original post by Mr M)
    No but I've known her for about 10 years online.
    lol....ok

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?

    this is what you'll be called on TSR

  2. this can't be left blank
    this email is already registered. Forgotten your password?

    never shared and never spammed

  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 the button to the right to create your account

    Slide to join now Processing…

Updated: April 8, 2012
New on TSR

Student crowdfunds degree

Graduate raises £26,000 online for Masters course

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