Question

Se log 2 = x e log 7 = y, então log 686 é?.

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{log\:2 = x}$

$\mathsf{log\:7 = y}$

$\mathsf{log\:686 = log\:(2.343)}$

$\mathsf{log\:686 = log\:(2.7^3)}$

$\mathsf{log\:686 = log\:2 + 3\:log\:7}$

$\boxed{\boxed{\mathsf{log\:686 = x + 3y}}}$