Re: computer symbolic differentiation


"Robert Israel" <israel@xxxxxxxxxxx> wrote in message
news:e0bsm7$ql3$1@xxxxxxxxxxxxxxxxxxxxxxxxx
In article <I5SVf.10199$KF3.8865@xxxxxxxxxxxxxxxxxxxx>,
NoIdea <foru@xxxxxxxxx> wrote:
how do computer algebra systems carry out symbollic differentiation? do
they simply follow the rules that a human would use when differentiating
or
is there another method thats used?

For differentiating expressions, yes, it's essentially the same as what
humans use. Where things get interesting is automatic differentiation of
a procedure, where there are two different modes (forwards and
backwards).

could you expand on that? what do you mean by a 'procedure' ?

thanks


Robert Israel israel@xxxxxxxxxxx
Department of Mathematics http://www.math.ubc.ca/~israel
University of British Columbia Vancouver, BC, Canada


.

Relevant Pages

  • Re: computer symbolic differentiation
    ... NoIdea wrote: ... they simply follow the rules that a human would use when differentiating or ... is there another method thats used? ... They are simole, straightforward to implement, and fast. ...
    (sci.math.symbolic)
  • Re: computer symbolic differentiation
    ... NoIdea wrote: ... is there another method thats used? ... For differentiating expressions, yes, it's essentially the same as what ... backwards). ...
    (sci.math.symbolic)