Question

Quanto é Log de $\sqrt{2}$ sobre $\sqrt{8}$

Answer 1

$\log \frac{ \sqrt{2} }{ \sqrt{8} } =\log \sqrt{ \frac{2}{8} } =\log \sqrt{ \frac{1}{4} } =\log \ \frac{1}{2} =\log 2^{-1} =-\log2$