Question

Me ajuda
log a 2 = - 15 , loga 5 = 40 calcule log a 100??

Answer 1

Resposta:

$log_{a}(2) = -15 \: \: \: log_{a}(5) = 40 \\ \\ log_{a}( {2}^{2} \times {5}^{2} ) \\ 2 log_{a}(2) + 2log_{a}(5) \\ 2 \times -15 + 2 \times 40 \\ -30 + 80 \\ 50$