Question

Помогите, пожалуйста..
Логарифмы..

Answer 1

log(a) b = 1/log(b) a

log(5) 3 = 1/ log(3) 5

a^log(a) b = b

log(a) b^n = n log(a) b

30. 3^(2/log(5) 3) = 3^(2log(3) 5) = 3^(log(3) 25) = 25

31. 5^(2/log(3) 5) = 5^(2log(5) 3) = 5^(log(5) 9) = 9