Question

solve this question ​

Answer 1

Answer:

$f\left(f\big(\frac{1}{x}\big)\right)=\frac{1}{x-1}$

Step-by-step explanation:

$f(x)=1-\frac{1}{x}\:---(1)$

$f\left(\frac{1}{x}\right)=1-\frac{1}{\frac{1}{x}}\\=1-x \:---(2)$

$Now,\\f\left(f\big(\frac{1}{x}\big)\right)\\=1-\frac{1}{1-x}\\=\frac{1-x-1}{1-x}\\=\frac{-x}{1-x}\\=\frac{1}{x-1}$

Therefore,

$f\left(f\big(\frac{1}{x}\big)\right)=\frac{1}{x-1}$

•••♪

Answer 2

Answer:

Step-by-step explanation: