Question

Determine o valor da base logarítmica em logx8=-3​

Answer 1

log x 8 = -3

x-³ = 8

x-³ = (2/1)³

x-³ = (1/2)-³

x = (1/2)

Answer 2

Oie, Td Bom?!

$log_{x}(8) = - 3$

$8 = x {}^{ - 3}$

$8 = \frac{1}{x {}^{3} }$

$8x {}^{3} = x {}^{3} \: . \: \frac{1}{x {}^{3} }$

$8x {}^{3} = 1$

$x {}^{3 } = \frac{1}{8}$

$x = \sqrt[3]{ \frac{1}{8} }$

$x = \frac{1}{2}$

Att. Makaveli1996