Question

3) Dados log de 10 2 = 0,3010; log de 10 3 = 0,4771 e log de 10 5 = 0,6990, calcule log de 10 90

Answer 1

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log(3) = 0.4771 
log(10) = 1

log(90) = log(9) + log(10) = 2log(3) + log(10) = 2*0.4771 + 1 = 1.9542