Question

Решите уравнение:

Lg(4x-1)<=1

Answer 1

$lg(4x-1) leq 1$
$lg(4x-1) leq lg10$
$4x-1 leq 10$
$4x leq 11$
$x leq frac{11}{4}$
$x leq 2frac{3}{4}$

ОДЗ: $4x-1 >0$
$x >1/4$

Ответ: [tex] frac{1}{4}