Question

calculați : log baza 2 din 1/4​

Answer 1

$log_{2}( \frac{1}{4} ) = \\ log_{2}( {4}^{ - 1} ) = \\ log_{2}( {2}^{ - 2} ) \\ = - 2 \times log_{2}(2) = \\ - 2 \times 1 \\ = - 2$