Question

2.40 и 2.41, пожалуйста.

Answer 1

2.40. Пусть 3x - 1 = t,

3x = t + 1, x = (t + 1)/3

f(t) = (t + 1)/3 + 2 = (t + 7)/3

f(x) = (x + 7)/3

2.41.     Пусть 4 - x = t, x = 4 - t

g(t) = 3*(4 - t) + 1 = 12 - 3t + 1 = -3t + 13

g(x) = -3x + 13