Răspuns:
Explicație pas cu pas:
a) log₁₃ 1 = log₁₃13⁰ = 0·log₁₃13 = 0
b) log₅5 = 1
c) log₁₀1000 = log₁₀(10³) = 3log₁₀10 = 3·1 = 3
d) log₂256 = log₂(2⁸) = 8 log₂2 = 8·1 = 8
e) log₂3 + log₂8 - log₂6 = log₂(3·8:6) = log₂(24:6) = log₂4 = log₂(2²) =
= 2log₂2 = 2·1 = 2
f) log₇77 - log₇11 = log₇(77:11) = log₇7 = 1
g) log₂64 +log₃ 27 = log₂(2⁶) +log₃(3³) =
= 6log₂2 + 3log₃3 = 6+3 = 9
