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Quoting Tristan <[log in to unmask]>:

> On Mon, 2003-03-24 at 21:23, Andreas Johansson wrote:
> > FYI One of my maths
> > teachers felt free to use f^IX for the ninth derivative of f.
>
> Is there a standard way of doing that? We've been told to do f^(9)
> (differentiated from f^9 by naught but brackets), because f'''' is
> already ridiculous enough....

Well, I've seen f^IV for fourth derivatives (never f"", tho'); for higher they
usually use f^(n), the teacher I wrote above being an exception.

                                                            Andreas