Re: implicit function

*To*: mathgroup at smc.vnet.net*Subject*: [mg28311] Re: implicit function*From*: Erk Jensen <Erk.Jensen at cern.ch>*Date*: Mon, 9 Apr 2001 02:58:09 -0400 (EDT)*Organization*: CERN http://www.cern.ch*References*: <9arhph$q8m@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Phil Bonacich wrote: > > This is a simple problem, but one that has bedeviled me. I define > ff[x_] := FindRoot[2y == x, {y, .5}] . I don't want "{y -> 0.25}" when I > enter ff[.5]; I want ".25", so that I can do other things with the function > ff. How do I get it? ff[x_] := (y /. FindRoot[2y == x, {y, .5}])