Re: Re: Problem with NMaximize

*To*: mathgroup at smc.vnet.net*Subject*: [mg90103] Re: [mg90094] Re: Problem with NMaximize*From*: Andrzej Kozlowski <akoz at mimuw.edu.pl>*Date*: Sun, 29 Jun 2008 05:34:33 -0400 (EDT)*References*: <200806280954.FAA26321@smc.vnet.net>

NSolve most certainly does not use a secant search or other iterative procedure (FindRoot does). For a single polynomial equation it uses the eigenvalues method, for systems of polynomial equations numerical Groebner basis. Andrzej Kozlowski On 28 Jun 2008, at 18:54, Bill Rowe wrote: > On 6/27/08 at 6:16 AM, drmajorbob at att.net (DrMajorBob) wrote: > >> NSolve and NMaximize generally use a kind of secant search, using >> previous attempts to extrapolate to a new and (hopefully) better >> one. > > I do not know what algorithms NSolve uses. But the documentation > for NMinimize and NMaximize indicate the algorithms used are not > well described as a "kind of secant search, using previous > attempts to extrapolate" > > See: > > tutorial/ConstrainedOptimizationOverview >

**References**:**Re: Problem with NMaximize***From:*Bill Rowe <readnews@sbcglobal.net>