g(x) = 2x - 1
g(f(x)) = 2f(x) - 1= 2x + 1
2f(x) - 1 = 2x + 1
2f(x) = 2x + 2
f(x) = x + 1
ответ : x + 1
g(x) = 2x - 1
g(f(x)) = 2f(x) - 1= 2x + 1
2f(x) - 1 = 2x + 1
2f(x) = 2x + 2
f(x) = x + 1
ответ : x + 1