Question

2.
Considere a função bijetiva:
f: R\{0} -->RI\{0}
definida por:

$f(x) = \frac{3}{x}$
Mostre que:
${f(x)}^{ - 1} = f(x)$
​

Answer 1

$y=\frac{3}{x}\\\\x=\frac{3}{y}\\\\y^{-1}=\frac{3}{x}$