Symbolic differentiation ("D","deriv", etc.) (PR#1928)

[Thomas Lumley]

On Thu, 22 Aug 2002 lylek@utk.edu wrote:

> Full_Name: Lyle W. Konigsberg
> Version: 1.5.1
> OS: Windows
> Submission from: (NULL) (160.36.64.99)
>
>
> I apparently found an error in how "deriv" puts a derivative to the screen
> (though the internal representation is correct).  Here's what I was doing for a
> class example:

Yes, it's the same as bugs 1119, 1797 and 1637 and probably some others.
The deparse doesn't always put parentheses in correctly.


	-thomas

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