FindMinimum Problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg44592] FindMinimum Problem*From*: "Jiang Xiao" <jiang.xiao at physics.gatech.edu>*Date*: Mon, 17 Nov 2003 03:38:23 -0500 (EST)*Organization*: Georgia Institute of Technology*Sender*: owner-wri-mathgroup at wolfram.com

Hi, all, recently I am dealing with a problem as following, findminimum(over x) of a function f[a[0],x], where a[z] satisfies a differential equation a'[z]=x*z say. The code is like: FindMinimum[x^2-a[0]*x/.NDSolve[{a'[z]==x*z,a[1]==1},a,{z,0,1}],{x,-1,1}] the problem is that I can do it in mathematica 4.2, but can't in mathematica 5.0 now. Do anybody where is the problem? thanks, Jiang