Re: how to find minimum value.

*To*: mathgroup at smc.vnet.net*Subject*: [mg94967] Re: how to find minimum value.*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Thu, 1 Jan 2009 07:27:03 -0500 (EST)*References*: <gjfjse$d8e$1@smc.vnet.net>

Hi, I'm not sure, that I understand you x^2 + 3 x + 1 == 0 is an equation, that has several solution but never a minimum, the equation is true or not but never minimal. Can you post your input to FindMinimum[] or NMinimize[] so that we can see *what* you want to minimize? Otherwise x /. Rest[FindMinimum[x^2 + 3 x + 1, x]][[1]] and x /. Rest[NMinimize[x^2 + 3 x + 1, x]][[1]] work as expected. Regards Jens mssivava wrote: > Hi everyone, > > For instance, lets assume that we have an equation like > a = Solve[x^2 + 3 x + 1 == 0] > > the solution gives 2 x values as > > {{x -> 1/2 (-3 - Sqrt[5])}, {x -> 1/2 (-3 + Sqrt[5])}} > > Which function can I use to find the min x? (Min[] or FindMimimum[] is not working) > > In my real question, I have more than 50 values. So I need to find a mathematica function to find the minimum value from 50 automatically. > > Thank you very much. >