Respostas

2014-02-11T19:38:05-02:00
Log 80 = log8 * 10 = x1

x1 = log2³ + log 10
x1 = 3log2 + log10
x1 = 3*0,3 + 1
x1 = 1,9

log20 = log2*10 = x2

x2 = log2 + log10
x2 = 0,3 + 1
x2 = 1,3

log5 = log10/2 = x3

x3 = log10 - log2
x3 = 1 - 0,3
x3 = 0,7

Razão da P.A. (0.7,1.3,1.9) = 0,6
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