Question

Реши логарифмическое уравнение

Answer 1

$log_3^2x=4\ \ left { {{log_3x=2} atop {log_3x=-2}} right. =>left { {{log_3x=log_33^2} atop {log_3x=log_33^{-2}}} right. =>left { {{x=9} atop {x=frac{1}{9}}  } right.$