If f(x) = f(x)=x-1x+1 , x ≠ 1 show that f(f(x)) = – 1x Provided x ≠ 0

If f(x) = $f (x) = \frac{x - 1}{x + 1}$ , x ≠ 1 show that f(f(x)) = – $\frac{1}{x}$ Provided x ≠ 0

Matching exercise

Match the items on the right to the items on the left.

Step - 1

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Step - 3