Question

I ) Calcular :
1 ) log 2 8 =
2 ) log 3 9 =
3 ) log 4 2 =
4 ) log 27 3 =
5 ) log 5 0,2 =
6 ) log 2 0,25 =
7 ) log 0,5 16 =
8 ) log 0,1 100 =
9 ) log 3 27 + log 3 1 =
10 ) log 5 25  log 5 5 =
11 ) log 4 64 + log 8 64 =
12 ) log 2 3  log 3 4 =
14) log 9 25  log 3 5 =

Answer 1

1) log ₂ 2³ = 3
2) log ₃ 3² = 2
3) log ₄ 2 = 1/2
4) log ₂₇ 3 = 1/3
5) log ₅ 1/5 = -1
6) log ₂ 1/4 = -2
7) log ₀.₅ 16 = -4
8) log ₀.₁ 100 = -2
9) log ₃ 27 + log ₃ 1 = 3 + 0 = 3
10) log ₅ 25  log ₅ 5 = 2  1
 11) log ₄ 64 + log ₈ 64 = 3 + 2 = 5