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MaplePrimes Activity

These are questions asked by Vrbatim

Ever since I updated to the latest maple13 patch (for OS X - snowleopard) when I try to call maple from the terminal it hangs: |\^/| Maple 13 (APPLE UNIVERSAL OSX) ._|\| |/|_. Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2009 \ MAPLE / All rights reserved. Maple is a trademark of
Maple People,

I've been trying to work out a procedure for a friend for a couple days right now and I'm totally stumped. It's just a maple syntax thing.

Given a set like:
how can I determine the ''highest t-derivative'' of X(t) (or any other of the functions).

That is, the highest t-derivative of X(t) in S is diff(X(t),t)
... of Y(t) in S is diff(Y(t),t$2)

I can't seem to get any relevant information by doing:

> f:=diff(X(t),t);
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