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Re: Problem: is not a list of numbers with dimensions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg88484] Re: Problem: is not a list of numbers with dimensions
  • From: Bhuvanesh <BhuvaneshBhatt at gmail.com>
  • Date: Tue, 6 May 2008 06:42:55 -0400 (EDT)
  • References: <fvmn0l$8j1$1@smc.vnet.net>

On May 5, 5:20 am, "Fikri Serdar GOKHAN" <fsgok... at gmail.com> wrote:
> When run the below code,
>
> A=1*10^(-4);
>
> k=2/3;
>
> g=1.12*10^(-11);
>
> Attenuation= 0.23026*0.475*10^(-3);
>
> L=7200;
>
> Leff=(1-exp[-Attenuation*L])/Attenuation;
>
> FindRoot[x-A*exp[k*g*x*Leff-Attenuation*L],{x,0}]
>
> It executes the below solution,
>
> FindRoot::nlnum: The function value {0.-0.0001 exp[-0.787489+0. \
>
> (1.+Times[<<2>>])]} is not a list of numbers with dimensions {1} at \
>
> {x} = {0.}.
>
> I need your help about numerical and Alpha_numeric solution of this problem.
>
> f(x)= x-A*exp[k*g*x*Leff-Attenuation*L
>
> Serdar

All Mathematica functions start with an uppercase letter, so exp[...]
should be Exp[...]

Bhuvanesh,
Wolfram Research


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