Question

Resolva ose logaritmos a baixo:

A) Log2 16= X

B) Log2 1024 = X

C) Log9 1= X

D) Log5 125 = X

E) Log3 1\81 = X

F) Log8 64 = X

G) Log raiz de 2 32 = X

Answer 1

a) 16 = 2 ^ x
2 ^ x = 2 ^ 4 > x = 4

b) 2^ x = 1024
2^x = 2 ^1 > x = 10

c) 9 ^ x = 1
9^x = 9^0 > x = 0

d)5^ x = 125
5^x = 5^3 > x = 3

e) 3^x = 1/81
3^ x = 3^-4 > x = -4

f) 8^x = 64
8^ x = 8^2 > x = 2

g) √2 ^ x = 32
2^ x/2 = 2 ^ 5
x/2 = 5 > x = 15