Question

please solve this problem​

Answer 1

Answer:

f(x) itself

Step-by-step explanation:

$f( \frac{1}{x} ) = \frac{1}{ {x}^{2} } - 3 \times \frac{1}{x } - \frac{3}{ \frac{1}{x} } + \frac{1}{ \frac{1}{ {x}^{2} } }$

$= \frac{1}{ {x}^{2} } - \frac{3}{x} - 3x + {x}^{2} = f(x)$