Question

f(x) = log5 (2x – 1)

Answer 1

Ответ:

$f(x) = log_{5}(2x - 1) \\ log_{5}(2x - 1) = 0 \: ; \: \: \: x > \frac{1}{2} \\ 2x - 1 = 1 \\ 2x = 1 + 1 \\ 2x = 2 \\ x = 1 \: \: \: \: ; \: \: \: x > \frac{1}{2}$