Question

function questions help please

Answer 1

$f(x) = \frac{1}{1 - x} \\ f(f(f(x))) = f(f( \frac{1}{1 - x} )) \\ = f( \frac{1}{1 - ( \frac{1 }{1 - x}) } ) \\ = f( \frac{1 - x}{ - x} ) \\ = (\frac{1}{1 - \frac{1 - x }{ - x} } )$
hope it will help you.