Help needed

*To*: mathgroup at smc.vnet.net*Subject*: [mg71050] Help needed*From*: "Cetin Haftaoglu" <cetin.haftaoglu at bam.de>*Date*: Wed, 8 Nov 2006 06:10:29 -0500 (EST)

Hallo Mathematica-Users, I have a little question about FindMinimum with a special kind of functions: I habe a funtion func[c1_]:=Module[{ldadn},logdadnroot=FindRoot[ldadn==c1(1/(1+Sqrt[ldadn]))^ 2,{ldadn,1}]; and an error-funtion erfunc[c1_]:=(func[c1]-1)^2 func and erfunc are steady for c1 >= 0 and the minimum is reached for c1->4. Than I tried to find the Minimum of erfunc and get a lot of Messages. FindMinimum[erfunc[c1],{c1,0}] My question: Is it possible to get the Minimum and how? The described function is a reduced problem, the real problem depends on several variables. Thanks in Advance, Cetin Haftaoglu