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Nabla Tuition TMUA Paper 1 · Q4

Paper 1Functions & graphs

The function ff is defined by

f(x)=x−1x+1,x≠−1.f(x)=\frac{x-1}{x+1},\qquad x\ne-1.

Find the solution of

f(f(f(x)))=2.f(f(f(x)))=2.
A−3-3
B−13-\frac13
C00
D13\frac13
E33

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