Re: Change of Variables

*To*: mathgroup at smc.vnet.net*Subject*: [mg32574] Re: Change of Variables*From*: aes <siegman at stanford.edu>*Date*: Sun, 27 Jan 2002 03:29:09 -0500 (EST)*Organization*: Stanford University*References*: <200201241021.FAA06071@smc.vnet.net> <a2r3lv$9mi$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

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.

**References**:**Change of Variables***From:*"John S" <bosniajohns@hotmail.com>