Assinale a propriedade valido : a) log(a·b) = log a · log b
b) log (a+b) = log a + log b
c) log m · a = m · log a
d) log a ^{m} = log m · a
e) log a ^{m} = m · log a
b) log (a+b) = log a + log b
c) log m · a = m · log a
d) log a ^{m} = log m · a
e) log a ^{m} = m · log a