Re: Maximize

*To*: mathgroup at smc.vnet.net*Subject*: [mg91479] Re: Maximize*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Sat, 23 Aug 2008 01:42:03 -0400 (EDT)*Organization*: Uni Leipzig*References*: <g8lpbu$ikc$1@smc.vnet.net>*Reply-to*: kuska at informatik.uni-leipzig.de

Hi, a) you mean Equal[] instead of Set[] Maximize[{g + (1 - g)*x - (g/2)*x^2 - (g/2)*v, x == (a/c) + sqrt ((d/c)*(v - 1/c))}, x] b) that is nonsense because you have one equation for x, you can insert this into your objective function and you get a constant with respect to x. So there is nothing to minimize Regards Jens Gregory Lypny wrote: > Not sure why this won't work. I'm trying to maximize with respect to > x subject to a constraint. I get an error message saying that the > constraint is not a valid variable. > > Maximize[ > g + (1-g)*x -(g/2)*x^2 - (g/2)*v, > x = (a/c) + sqrt((d/c)*(v - 1/c)), > x > ] >