MathGroup Archive 2001

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implicit function

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?

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