Question

"Свойства логарифмов" решить

Answer 1

$log_{sqrt[5]{12}}12=log_{12^{1/5}}12=5log_{12}12=5\\\ frac{log_252}{2+log_213} = frac{log_2(2^2cdot 13)}{2+log_213} = frac{log_22^2+log_213}{2+log_213} = frac{2+log_213}{2+log_213} =1\\\ frac{log_35}{log_37} +log_7, 0,2=log_75+log_75^{-1}=log_75-log_75=0$