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If $f(x) = |3x - 1|,$ compute all values of $x$ for which $f(f(x)) = x.$ Enter all the solutions, separated by commas.

Guest Mar 20, 2019

ElectricPavlov · Answer 1 · 2019-03-20T01:44:49

|9x-4|=x

so 9x -4 = +x x = 1/2

or 9x-4 = -x x = 2/5

Alan · Answer 2 · 2019-03-20T07:39:40

+33654

+3

You have found two of the possibilities EP.

Alan Mar 20, 2019

+37165

0

Thanx, Alan ! I see what I did incorrectly now.

edited by ElectricPavlov Mar 20, 2019