Question

log de 7/5 com base 5/7

Answer 1

Resposta:

$- 1$

Explicação passo-a-passo:

$log_{ \frac{7}{5} }( \frac{7}{5} {}^{ - 1} )$

$- 1$

Answer 2

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\Large\boxed{\begin{array}{I}\\\tt{log_{\frac{5}{7}}\:\dfrac{7}{5} = x}\\\\\tt{\left(\dfrac{5}{7}\right)^x = \dfrac{7}{5}}\\\\\tt{\left(\dfrac{5}{7}\right)^x = \left(\dfrac{5}{7}\right)^{-1}}\\\\\tt{x = -1} \\\\\end{array}}}$