Question

Dados:log 2 = 93 log 3 = 0,47 log 7 = 0,4 log 11 = 1,04. Calcule

a)log 12

b)log 121

c)log 5

d)log 3/7

Answer 1

a) log12 =
log(2.3.2) =
log2 + log3 + log2 =
93 + 0,47 + 93 =
186,47

b) log121 =
log11^(2) =
2.log11 =
2.1,04 =
2,08

c) log5 =
log(10/2) =
log10 - log2 =
1 - 93 =
-92

d) log 3/7 =
log3 - log7 =
0,47 - 0,4 =
0,07