Question

Determine um nero,cujo logaritimo de base 25/64 e ingual a -2

Answer 1

         
                  $log( \frac{25}{64} )N=-2 \\ \\ N= (\frac{25}{64} ) ^{-2} \\ \\ N= (\frac{64}{25})^2 \\ \\ N= \frac{4096}{625}$