Question

1 - Calcule o valor das funções logarítmicas:
a) Logs 125 =
b) Log 9 1 =
c) Log 1/16 =
d) Log 2 1/16 =​

Answer 1

Resposta:

A) lo5 125=3

B) log9 1=0

C) log1/2 (1/16)=2

D) log2 1/16=-4

Explicação passo-a-passo:

A) log5 125

5^x=5^3

x=3

lo5 125=3

B) log9 1

9^x=1

x=0

log9 1=0

C) log½ 1/16

(1/2)^x=(1/16)

2^-1x=(2)^-2

-x=-2

x=-2/-1

x=2

log1/2 (1/16)=2

D) log2 1/16

2^x=2^-4

x=-4

log2 1/16=-4