Hi, Suppose I start with a simple function : F I need to set F[k] equal to 0 for some k values. For a single value, the following instructions do the job (Version 8.0) :
Clear[F]; F[x_] := 1; F[1] := 0;
Table[F[k], {k, 10}]
{0, 1, 1, 1, 1, 1, 1, 1, 1, 1}
However for a lot of values (say belonging to a lengthy list) the following doesn't work :
Clear[F]; list = {1, 2, 3}; F /@ list := 0;
SetDelayed::write: Tag Map in F/@{1,2,3} is Protected. >>
Any idea about by what to write in place of F /@ list := 0; ? Thanks in advance Andre
