Respostas

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  • Ambicioso
2013-12-04T10:52:18-02:00
Log 18 = log 3².2 = log3² + log 2 = 2 log3+ log2 = 2.0,48 +0,3 = 1,26
log 27/2 = log3³ - log 2 = 3log3 - log 2 = 1,14
log 72 = log2³.3² = 3log2 + 2 log 3 = 0,9 + 0,96 = 1,86