Question

Нужно с ОДЗ..........​

Answer 1

$log_3(4x-1) = 4$

ОДЗ: $4x - 1 \geq 0 => x \geq \frac{1}{4}$

$4x-1 = 3^4\\4x - 1 = 81\\4x = 82\\x = \frac{82}{4} = \frac{41}{2} = 20.5 \geq \frac{1}{4}$

Ответ: x = 20.5