|
The group you are posting to is a Usenet group. Messages posted to this group will make your email address visible to anyone on the Internet.
Your reply message has not been sent.
Your post was successful
 |
Newsgroups: sci.math
From: Cheng Cosine <asec...@gmail.com>
Date: Fri, 23 Oct 2009 20:09:28 -0700 (PDT)
Local: Sat, Oct 24 2009 3:09 am
Subject: ? estimating coef of DE
Hi:
Given dy/dt = a*y+f, and we want to estimate the value of a by the value of y for a given f. The question is how many different f we set as the input so that we have enough output(s) of y to estimate Suppose we are dealing with a PDE like pdiff(u, t, 1) = a*pdiff(u, x, where pdiff(u, x, 2) means twice partial derivate of u to x. Again we to estimate a for given f and measuremnt u. What are the extra considerations we have, compared with the case when we deal with only ode? Thanks, You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
| |||||||||||||