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MathGroup Archive 1997

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Help on FindRoot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg5786] Help on FindRoot
  • From: Hossein Kazemi <kazemi at som.umass.edu>
  • Date: Sat, 18 Jan 1997 14:58:38 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

I have the following lines:

h[0]=1;
x[t_]:=2^h[t] - 3*h[t-1];
Table[h[t]=h[t]/.FindRoot[x[t]==t,{h[t],2}],{t,1,5}]

As you can see, I am trying to solve for different values of h[t], which
is recursively depends on h[t-1].

MMA (3.0) gives a bunch of errors such as 
Unset:: norep: Assignment on h for h[1] not found.
and so on.

However, it also gives the correct answers at the end.

What is going on?  Am I doing something wrong?


**********************************************************
Hossein Kazemi
University of Massachusetts


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