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small problem.

  • To: mathgroup at
  • Subject: [mg12852] small problem.
  • From: phpcp <phpcp at>
  • Date: Wed, 17 Jun 1998 00:27:55 -0400
  • Organization: University of Warwick, UK
  • Sender: owner-wri-mathgroup at


I want to choose a definition of a function by the vlaues of its
argument. So I can use :

a0[t_] := t^2 - t^3/5./;t<0.001;a0[t_] := t^2/;t>=0.001

This works fine. But if the function definition (or form or whatever) is
a bit more complicated as follows :

solution = Solve[s0^4 + s0 t + 1 == 0,s0]; chi0[x_] :=
x/;x<0.01;chi0[x_] := (solution[[3,1,2]]/.t -> x)/;x>=0.01

It doesnt work. Any ideas?

thanks in advance,

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