Question

seja função f(x)=2/(x-3) calcule o valor de f 1/2​

Answer 1

Olá!

$f(x) = \frac{2}{(x - 3)} \\ \\ f( \frac{1}{2} ) = \frac{2}{( \frac{1}{2} - 3)} \\ \\ f( \frac{1}{2} ) = \frac{2}{ - \frac{5}{2} } \\ \\ f( \frac{1}{2} ) = - \frac{4}{5}$