MathGroup Archive 2004

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Matrix and estimation stuff

  • To: mathgroup at
  • Subject: [mg48735] Matrix and estimation stuff
  • From: jax79sg at (jax)
  • Date: Fri, 11 Jun 2004 23:59:04 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Hi, i have a few questions regarding some math and estimation stuff.

Lets say i have 2 variables, the x, y coordinates of 2 points.
How am i going to compute the covariance matrix of the 2 points?

What exactly is a jacobian matrix about?
I understand how to derive a jacobian matrix from a given process
equation but i do not really understand the usage/purpose of it.

If i got a nonlinear process, how do i linearise it? Has this got
anything to do with the jacobian matrix above?


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