1. log 25 35, если log5 7 = a. 2. решить: log3(log2 - вопрос №87879101253557232558 от ShudrenkoArtem 13.01.2020 12:50

Question

Алгебра: 1. log 25 35, если log5 7 = a. 2. решить: log3(log2 5×log5 8)

ShudrenkoArtem · Answer

Задание 1.log₂₅35 = (1/2) • log₅ • (5 • 7) = (1/2) • (log₅5 + log₅7) = (1/2) • (1 +log₅7) = (1/2) • (1 + a).Задание 2.log₃ • (log₂5 • log₅8) = log₃ • (log₂5 • log₅2³) = log₃ • (log₂5 • 3 • log₅2) = log₃(3 • log₂5/log₂5) = log₃3 = 1....