>>>>> "Chris" == Chris Sangwin <sangwinc@for.mat.bham.ac.uk> writes:
[snip]
Chris> (C1) DIFF(x^2,x);
Chris> d 2
Chris> (D1) -- (x )
Chris> dx
[snip]
Chris> Information below
Chris> Maxima version: 5.9.0
This is rapidly becoming a FAQ.
You need to use the CVS version of maxima, or grab the necessary fix
(unfortunately, I don't remember where it is).
Ray