Question

log de 1/512 na base 1/8

Answer 1

Resposta:

(1/8)^x = 1 / 512

2^(-3x) = 2^(-9)

-3x = -9

x = -9/(-3)

x = 3

resp : 3

Answer 2

Resposta:

[log 1/512 ] / log [ 1/8}

[log (1/8)³ ] / log [ 1/8}

3* log (1/8)/ log (1/8)

= 3