Question

Se log 427 = 2,63, então o valor de log 0,00427 é:

Answer 1

Explicação passo-a-passo:

Lembre-se que:

$\sf log_{b}~\Big(\dfrac{a}{c}\Big)=log_{b}~a-log_{b}~c$

Assim:

$\sf log~0,00427=log~\Big(\dfrac{427}{100000}\Big)$

$\sf log~0,00427=log~427-log~100000$

$\sf log~0,00427=log~427-log~10^5$

$\sf log~0,00427=2,63-5$

$\sf \red{log~0,00427=-2,37}$