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Re: implicit function


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}])


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