GMAT Practice Question Set #56 (Question 166-168)

Problem Solving Question #166: Function of y and 1-y  
Time 0 0 : 0 0 : 0 0

For which of the following functions f is f(y) = f(1-y) for all of y?


`f(y) = 3y + 2`


`f(y) = 1-y^2`


`f(y) = 4y^2 * (2-2y)^2`


`f(y) = y/(y-1)`


`f(y) = y/(y+1)`

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