Results 1 to 3 of 3

Thread: boundary value problem

  1. #1
    Super Member
    Joined
    Mar 2014
    From
    malaysia
    Posts
    884
    Thanks
    2

    boundary value problem

    Solve boundary value problem y" + xy = (x^3) -4/x , 1<x<2 , with boundary conditions 4y(1) +y'(10 = 0 , and 3y(2) + 2y'(2) = 0 , use h = 0.2 . Derive the system of linear equations in matrix by finite difference method ..
    My answer is different with the ans provided . I have attached the ans given and also my working .
    Which part of my working is wrong ? I spent the whole day looking at it , yet , still cant figure out which part is wrong ,

    When i = 0 , i gt my ans = -14y0 + 50y1 = -3 , after simplification, my ans is
    -0.56y0 + 2y1 = -0.12
    But , the ans is -0.36y0 + 2y1 = -0.12

    boundary value problem-img_20170520_124619.jpg
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Mar 2014
    From
    malaysia
    Posts
    884
    Thanks
    2

    Re: boundary value problem

    Quote Originally Posted by xl5899 View Post
    Solve boundary value problem y" + xy = (x^3) -4/x , 1<x<2 , with boundary conditions 4y(1) +y'(10 = 0 , and 3y(2) + 2y'(2) = 0 , use h = 0.2 . Derive the system of linear equations in matrix by finite difference method ..
    My answer is different with the ans provided . I have attached the ans given and also my working .
    Which part of my working is wrong ? I spent the whole day looking at it , yet , still cant figure out which part is wrong ,

    When i = 0 , i gt my ans = -14y0 + 50y1 = -3 , after simplification, my ans is
    -0.56y0 + 2y1 = -0.12
    But , the ans is -0.36y0 + 2y1 = -0.12

    Click image for larger version. 

Name:	IMG_20170520_124619.jpg 
Views:	3 
Size:	957.7 KB 
ID:	37627
    solved
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    15,875
    Thanks
    3524

    Re: boundary value problem

    You joined this site over three years ago and have since made 877 posts ... when are you going to start posting up in Latex?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Boundary Value Problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: Dec 16th 2016, 05:57 PM
  2. Boundary value problem
    Posted in the Differential Equations Forum
    Replies: 5
    Last Post: Dec 1st 2013, 12:01 AM
  3. Replies: 1
    Last Post: Feb 14th 2011, 05:28 AM
  4. boundary value problem
    Posted in the Differential Equations Forum
    Replies: 0
    Last Post: Dec 15th 2009, 06:41 AM
  5. Boundary Value Problem
    Posted in the Differential Equations Forum
    Replies: 0
    Last Post: Nov 9th 2009, 07:17 AM

/mathhelpforum @mathhelpforum