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:
S:={X(t)^2+Y(t)^2=1,2*X(t)*diff(X(t),t)+2*Y(t)*diff(Y(t),t$2)=0}
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);
d