Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

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

Search the Archive

How do I combine Solve and Maximize?

  • To: mathgroup at
  • Subject: [mg65740] How do I combine Solve and Maximize?
  • From: "Friskin, David \(Mr\) \(Summerstrand Campus South\)" <David.Friskin at>
  • Date: Sun, 16 Apr 2006 03:49:19 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

[This post has been delayed due to email problems - moderator]

I have an objective function with two input variables.  I have created a 
function that maximizes the objective function with respect to one of 
the input variables.  I would like to use Solve[] on this new function, 
but I am having trouble doing this. 

The following is a simple example of my problem:

f[x_,y_]:= -(x-10)^2-(y-10)^2+100  (* Objective Function *)

f1[x_]:= Maximize[{f[x,y],y>0},{y}][[1]]  (* Value of Objective 
Function maximized over all y values, at a specific x value *)

Solve[{f1[x]=A980,x>0},{x}]  (* What values of x causes f1==80 *)

This command produces a number of errors.  Can anyone tell me where my 
error is?


NOTICE: Please note that this eMail, and the contents thereof, 
is subject to the standard NMMU eMail disclaimer which may be found at:  


  • Prev by Date: Help with 3D Drawing please
  • Next by Date: Simplifying equations for Mathematica
  • Previous by thread: Re: Help with 3D Drawing please
  • Next by thread: Re: How do I combine Solve and Maximize?