Respostas

2013-09-05T13:21:37-03:00
Log 72 =  log2^3.3^2  
log 72 = log2^3 + log3^2 
log 72 = 3.log2 + 2.log3 
log 72 = 3.a + 2.b
log72 = 3a + 2b

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