Consider . Find the number of solution(s) of the equation 3f(f(x)) - 1 = 0 in [-2, 4]…

MATHEMATICS · Subjective · AoPS · Mathematics · Special Functions · Special Functions

Problem

Consider f(x)={[x]+∣x−1∣+1}f(x) = \{[x] + |x-1| + 1\}. Find the number of solution(s) of the equation 3f(f(x))−1=0 in [−2,4]3f(f(x)) - 1 = 0 \text{ in } [-2, 4] [Note: [y][y] and {y}\{y\} denotes greatest integer function less than or equal to yy and fraction part function of yy, respectively.]

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