1434
в) lg 0.0001 = lg 10⁻⁴ = -4
г) log₁/₃ 81 = log₁/₃ 3⁴ = log₁/₃ (1/3)⁻⁴ = -4
1435
a) log√₇ 49 = log√₇ 7² = log√₇ (√7)⁴ = 4
б) log√₂ (2√8) = log√₂ √32 = log√₂ √(2⁵) = log√₂ (√2)⁵ = 5
в) log ₁/₁₅ (225 ∛15) = log₁/₁₅ (15² ∛15) = log₁/₁₅ (15^(⁷/₃))=
= log₁/₁₅ (1/15)^(-⁷/₃) = -7/3 = -2 ¹/₃
г) log₃/₂ (64/729) = log ₃/₂ (2/3)⁶ = log₃/₂ (3/2)⁻⁶ = -6