Hi,
This works for me (If I understood what you want)
depends( f , x );
P : x - f / diff( f , x );
/* Assuming there exist a point x=a such that f(x=a) = 0 */
at(P,[f=0, x=a]);
%o3 a
If you want to evaluate at a given point x, then you will have to
define f in the proper way.
JPi
On Wed, Jan 26, 2011 at 10:26 PM, stas.kazmin at googlemail.com
<stas.kazmin at googlemail.com> wrote:
> P : x - f / diff( f , x );
--
M. Sc. Juan Pablo Carbajal
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PhD Student
University of Z?rich
www.ailab.ch/carbajal