Question

Dados log 2= 0,301 e log 5= 0,698 determine o log 20​

Answer 1

Explicação passo-a-passo:

$\sf log~20=log~(2^2\cdot5)$

$\sf log~20=log~2^2+log~5$

$\sf log~20=2\cdot log~2+log~5$

$\sf log~20=2\cdot0,301+0,698$

$\sf log~20=0,602+0,698$

$\sf \red{log~20=1,3}$