Question

Calcule o valor numérico de:

Answer 1

$y + \frac{1}{x} = \frac{xy + 1}{x}$
$x + \frac{1}{y} = \frac{xy + 1}{y}$
Logo:

$\frac{ \frac{xy + 1}{x} }{ \frac{xy + 1}{y} } = \frac{xy + 1}{x} . \frac{y}{xy + 1} = \frac{y}{x} = \frac{5}{10} = \frac{1}{2}$