Question
Let f(x) = (3x–4)/(2x+1). Solve f(f(x)) =
x.Solution
ATQ,
f(f(x)) = (x–16)/(8x–7) Solve (x–16)/(8x–7) = x Gives equation x² – x + 2 = 0 Discriminant <0 → no real solutions. Answer: No real solution (complex roots = (1 ± i√7)/2).
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