Question

Calcule os logaritmos a seguir :
a) log 256
2
b) log 81
3
c) log 125
25
d) log ¹_
64
2

Answer 1

a) 2^x = 256
2^x= 2^8
x=8

b) 3^x= 81
3^x = 3^4
x=4

c) 25^x=125
5^2x = 5^3
x= 2/3

d) 2^x=64
2^x= 2^6
x=6