Question

calculando os logaritmos, assinale a alternativa correta.

log7 (1/49) e log10 (1/1000)

Answer 1

$log7( \frac{1}{49} ) = log7( 7^{-2} ) = -2$

$log10( \frac{1}{1000} ) = log10( 10^{-3} ) = -3$