[Maxima] Maxima by Example: Chapter 1 total rewrite //ratdiff

[Edwin Woollett]

On July 16, 2009 Richard Fateman wrote:
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The message is perfectly clear to me :)


Perhaps it would be clearer to other people if it were
 more elaborate.  For example,


"ratdiff variable x is embedded in the non-rational
subexpression log(x+1), and therefore its specially
efficient method of differentiation cannot be used.
 You can use diff(..,x) instead. "

This could be changed without offending the author of ratdiff. (me)
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thanks for the info (another reason I should read lisp code).

A short version might be:

 " for non-rational expressions, use diff instead of ratdiff  " .

Ted