Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help on conjugate gradient programm in matlab

  1. Apr 17, 2011 #1
    hi 1.i have a problem to find the princip to programm in matlab the method of conjugate graduate, in fact ,my broblem is:
    1.i wanna study caracterisque of charge RC WHICH function is :y=a*(1-exp(b*t)) ,a is supposed to be tension maximal and b =1/RC the problem is that i have to find the parametre a and b as we have the equation y=5*(1-exp(-2*t)) + randn(length (t),1); t=1:20 ( 5 et -2 calculate theoriqement)
    2. THE traitement has to be by conjugate gradient method.
    in summary i have to estimate parametre a and b.

    i calculate before a and b by méthode Gauss newton that's seem great , the broblem in conjugate gradient that i have not a matrix symetrique define positive
    thanks for yr help
    and sorry for my bad english
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Discussions: Help on conjugate gradient programm in matlab
  1. MATLAB help (Replies: 7)

  2. Matlab help (Replies: 6)