- Sendo log2 = 0.3; log3 = 0.4 e log5 = 0.7, calcule:
a) log2, 50
b) log2, 2
c) log3, 600
d) log3, 15
Respostas: a) 17/3 b) 15/4 c) 3 d) 3/1 e) 11/7
- Sabendo-se que: log_a = 8, log_b = 2 e log_c = 1, calcular:
a) a^3/b^2 - c^4
b) sqrt(ab)/c
Respostas: a) 16 b) 7/3
Parte 3:
6) Usando apenas que log20 = 1.30, log30 = 1.47 e log60 = 1.79, calcule:
a) log4 + log5
b) log5 + log12
c) log5 + log2
d) log120 - log6
e) log60 - log12
f) log180 - log72
g) log225 + 2log5
h) log200 - log80
R: (a) 1.30 (b) 1.47 (c) 1.58 (d) 1.63 (e) 1.70 (f) 1.73 (g) 1.92 (h) 2.94 (i) 2.32 (j) 1.47 (k) 3.58 (l) 1.79 (m) 2.77 (n) 2.79 (o) 2.94 (p) 2.32
