Results 1 to 4 of 4

Math Help - ode45

  1. #1
    Newbie
    Joined
    Mar 2009
    Posts
    1

    ode45

    salut pour tout le monde:
    j'ai un probleme urgent,je suis entrain de praparer mon projet de fin d'etude et j'ai besoin d'integrer cette equation differencielle en utilisant la fonction ode45 du matlab mais j'ai trouve beaucoup de problemes lors de l'ecriture du code.
    Est ce que quelcun peut m'aider?
    l'equation est:
    dTfi /dt = [ - (mf .a) lij Tfj - mf .a li0 Tfe - Tfi + f(t) ] / b
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by cherie View Post
    salut pour tout le monde:
    j'ai un probleme urgent,je suis entrain de praparer mon projet de fin d'etude et j'ai besoin d'integrer cette equation differencielle en utilisant la fonction ode45 du matlab mais j'ai trouve beaucoup de problemes lors de l'ecriture du code.
    Est ce que quelcun peut m'aider?
    l'equation est:
    dTfi /dt = [ - (mf .a) lij Tfj - mf .a li0 Tfe - Tfi + f(t) ] / b
    Quote Originally Posted by Loose translation
    Hello everyone. I have an urgent problem.

    I'm busy working on my final project and need to solve a differential equation using the matlab function ode45. I'm having problems with the code. Can someone help me? The equation is:

    dTfi /dt = [ - (mf .a) lij Tfj - mf .a li0 Tfe - Tfi + f(t) ] / b
    ..
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Moo
    Moo is offline
    A Cute Angle Moo's Avatar
    Joined
    Mar 2008
    From
    P(I'm here)=1/3, P(I'm there)=t+1/3
    Posts
    5,618
    Thanks
    6
    Quote Originally Posted by mr fantastic View Post
    ..
    Originally Posted by Loose translation
    Even the French is loosy... :P
    Last edited by Moo; March 18th 2009 at 02:56 PM.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by mr fantastic View Post
    ..
    It's the implied use of Einstein's summation convention that has me thrown (which also look inconsistent anyway). Makes the equation difficult to decipher (I had thought of tidying the equation up until I discovered all the formatting which makes it a tedious job).

    CB
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. ode45 help
    Posted in the Math Software Forum
    Replies: 1
    Last Post: May 12th 2010, 10:53 PM
  2. Ode45
    Posted in the Math Software Forum
    Replies: 5
    Last Post: October 28th 2009, 05:40 PM
  3. Matlab ode45
    Posted in the Math Software Forum
    Replies: 8
    Last Post: October 24th 2009, 11:22 AM
  4. Using ODE45
    Posted in the Math Software Forum
    Replies: 10
    Last Post: March 29th 2009, 01:14 PM
  5. ode45 MATLAB
    Posted in the Math Software Forum
    Replies: 2
    Last Post: September 24th 2008, 04:02 AM

Search Tags


/mathhelpforum @mathhelpforum