Jika log 2 = m dan log 3 = n, maka log 0,18 = ...

[tex] log(0.18) = log( \frac{18}{100} ) \\ = log(18) - log(100) \\ = log(2 \times {3}^{2} ) - 2 \\ = log(2) + 2 log(3) - 2 \\ = m + 2n - 2 \\ = m + 2(n - 1)[/tex]