reais positivos, desenvolver as expressões abaixo.
a)
$\;log_{{}_{\Large \,2\,}}\left(\dfrac{\,2ab\,}{c}\right)\,$
b)
$\;log_{{}_{\Large \,3\,}}\left(\dfrac{\,a^{\large 3}b^{\large 2}\,}{c^{\large 4}}\right)\,$
c)
$\;log\,\left(\dfrac{\,a^{\large 3}\,}{\,b^{{}^{\Large 2}}\,\centerdot\,\sqrt{\,c\,}\,}\right)\,$
