^9log1/81 dengan caranyaa makasii

[tex] {}^{9} log( \frac{1}{81} ) \\ = {}^{9} log( \frac{1}{9 {}^{2} } ) \\ = {}^{9} log( 9 {}^{ - 2} ) \\ = - 2 \times {}^{9} log(9) \\ = - 2 \times 1 \\ = - 2[/tex]