Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: DiffMaps package

  • To: mathgroup at smc.vnet.net
  • Subject: [mg89547] Re: DiffMaps package
  • From: dh <dh at metrohm.ch>
  • Date: Thu, 12 Jun 2008 03:00:20 -0400 (EDT)
  • References: <g2nu6o$ei2$1@smc.vnet.net>


Hi,

I do not know a Package named diffMap. But it is easy enough (provided 

you can solve the equations) to calculat critical points. Simply use the 

definition. The gradient has to be zero:

Solve[{D[f[x,y],x]==0,D[f[x,y],y]==0},{x,y}]

eventually you need NSolve or Reduce.

hope this helps, Daniel





Modeler wrote:

> Hi everybody,

> 

> I need to determine the critical points of a 3D surface parameterized by a function f[x,y]. I was told there is a package called diffMaps (apparently not installed by default) which allows one to easily compute local minima and  maxima as well as saddle points. Does anyone know how to get it or else can give any ideas about computation of critical points? Thanks a lot.

> 





-- 



Daniel Huber

Metrohm Ltd.

Oberdorfstr. 68

CH-9100 Herisau

Tel. +41 71 353 8585, Fax +41 71 353 8907

E-Mail:<mailto:dh at metrohm.com>

Internet:<http://www.metrohm.com>




  • Prev by Date: Don't understand replacement rule for some functions
  • Next by Date: Re: How to test if list of arguments are numeric
  • Previous by thread: DiffMaps package
  • Next by thread: Re: DiffMaps package