Question

Calcule o valor de x:

a) 1og ×8=3
b) 1og ×1/16=2
c) 1og↓² ×=5
d) 1og↓½ 32=×​

Answer 1

Explicação passo-a-passo:

a)

logx(8) = 3

logx(2^3) = 3

3logx(2) = 3

logx(2) = 1

x = 2

b)

logx(1/16) = 2

x^2 = 1/16

x = 1/4

c)

log2(x) = 5

x = 2^5 = 32

d)

log1/2(32) = x

log2(32) = -x

x = -5