Respostas

2014-06-17T19:55:07-03:00
Oi,

use as propriedades de log:

log(ab)~\to~log(a*b)\to~loga+logb\\
logb^k~\to~k*logb

_____________________

log \sqrt[3]{a^2b}=log \sqrt[3]{a^2*b^1} \\\\
log \sqrt[3]{a^2b}= log(a^{ \tfrac{2}{3} }*b^{ \tfrac{1}{3} })\\\\
log \sqrt[3]{a^2b}=loga^{ \tfrac{2}{3} }+logb^{ \tfrac{1}{3} }\\\\
log \sqrt[3]{a^2b}= \dfrac{2}{3}*loga+ \dfrac{1}{3}*logb\\\\
log \sqrt[3]{a^2b}= \dfrac{2}{3}*0,301+ \dfrac{1}{3}*0,477\\\\
log \sqrt[3]{a^2b}=0,2+0,159\\\\
\boxed{log \sqrt[3]{a^2b}\approx0,359}

Espero ter ajudado e tenha ótimos estudos =))
entendi
obrigada....
tá visualizando bem aí??
sim
aquele sinal ali significa aproximadamente