Решите уравнение: 4^x - 5*2^x +6=0
Решение 4^x - 5*2^x + 6 = 0 2^(2x) - 5*2^x + 6 = 0 2 ^x = t, y > 0 t² - 5t + 6 = 0 t₁ = 2 t₂ = 3 1) 2^x = 2 x₁ = 1 2) 2^x = 3 log₂ (2^x) = log₂ 3 x log₂ 2 = log₂ 3 x₂ = log₂ 3 Ответ: x₁ = 1 ; x₂ = log₂ 3