Symbols in expression
- To: mathgroup at smc.vnet.net
- Subject: [mg19] Symbols in expression
- From: sigmundv at gmail.com
- Date: Sun, 25 May 2008 02:02:52 -0400 (EDT)
Dear all,
Define, say,
r = {Cos[u] Sin[v],Sin[u] Sin[v],Cos[v]}.
How can I write a function, which takes r as an argument and returns a
list {u,v}? If we defined r[u_,v_]:=... it could be achieved fairly
easily using DownValues. But how can I achieve it in this case?
Kind regards,
Sigmund Vestergaard