MathGroup Archive 2002

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Re: Change of Variables


I'll just throw in a side note that making a change of variables is one of those 
standard analytical tools (along with "harmonic matching", or series expansions) 
that lots of people learn and use to simplify analytical expressions or attach 
physical meaning to expressions.

So, it would be very nice if one of the future additions to Mathematica could be some 
kind of command or expression that would do a neat and effective job of change 
of variables, without the innocent user having to get into all the hairy details 
of pattern matching and the innards of how Mathematica processes things.


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