Results 1 to 7 of 7

Math Help - Area bounded by curves

  1. #1
    Member maybeline9216's Avatar
    Joined
    Sep 2008
    From
    Singapore~
    Posts
    108

    Area bounded by curves

    Please do part(ii).My answer is 5.61% but the paper's answer is 5.31%.
    Please check for me thanks...
    Attached Thumbnails Attached Thumbnails Area bounded by curves-img_0006.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    I get 5.31%
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member maybeline9216's Avatar
    Joined
    Sep 2008
    From
    Singapore~
    Posts
    108
    Can tell me how u get? Like: what is your value for the shaded and unshaded area respectively, area of region OAPB, coords.of B AND Coords.of Q

    I want to see where my workings and answer differ...
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    show me what you did ... maybe i can see your mistake.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member maybeline9216's Avatar
    Joined
    Sep 2008
    From
    Singapore~
    Posts
    108
    Quote Originally Posted by skeeter View Post
    show me what you did ... maybe i can see your mistake.
    Please look at my qn 11 workings.Thanks
    Attached Thumbnails Attached Thumbnails Area bounded by curves-img_0007.jpg  
    Follow Math Help Forum on Facebook and Google+

  6. #6
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    let f(x) = e^x
    g(x) = 4 - e^x
    h(x) = 2(x - \ln{2}) + 2

    A = \int_0^{\ln{2}} f(x) \, dx + \int_{\ln{2}}^{\ln{4}} g(x) \, dx

    B = \int_0^{\ln{2}} f(x) - h(x) \, dx

    calculate \frac{B}{A}.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Member maybeline9216's Avatar
    Joined
    Sep 2008
    From
    Singapore~
    Posts
    108
    Thanks i found my mistake already..i forgot to add the unshaded area into the calculation of the area of the whole plot
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. area bounded by the curves...
    Posted in the Calculus Forum
    Replies: 3
    Last Post: June 7th 2011, 03:57 PM
  2. Area bounded by given curves
    Posted in the Calculus Forum
    Replies: 3
    Last Post: January 30th 2010, 11:03 AM
  3. area bounded by curves
    Posted in the Calculus Forum
    Replies: 4
    Last Post: October 21st 2009, 05:53 AM
  4. area bounded by two curves
    Posted in the Calculus Forum
    Replies: 6
    Last Post: August 19th 2009, 06:29 PM
  5. Area bounded by two curves
    Posted in the Calculus Forum
    Replies: 4
    Last Post: June 23rd 2008, 07:34 PM

Search Tags


/mathhelpforum @mathhelpforum