FindRoot
- To: mathgroup at smc.vnet.net
- Subject: [mg35929] FindRoot
- From: Gutlederer Erwin <e9426270 at stud4.tuwien.ac.at>
- Date: Thu, 8 Aug 2002 06:06:19 -0400 (EDT)
- Organization: Vienna University of Technology, Austria
- Sender: owner-wri-mathgroup at wolfram.com
Hi mathematica-user,
following problem,
I use FindRoot to solve a set of multidim. equations,
e.g here for easier notation 2 dim.
In:=FindRoot[{ equation1[x,y] , equation2[x,y]}, {x, .1}, {y, .5}]
Out:={x -> 0.513489, y -> 0.858096}
equation1 may be dependant on further variables, call them a1,a2,... and I
am looking for an expression for the solution function x[a1,a2,..]:=... ,
y[a1,a2,...]:=... . It may also happen that a solution cannot be found and
this case should be treated properly (e.g with Catch/Throw ?). The problem
is that finding the root with FindRoot may be quite time consuming so that
I don't want to calculate just once with the same parameters.
any hint?
thank you for any help in advane
Erwin.