Page 13 - pelatihan flip pdf

13

a. 4 3 log 81  3 4  81

 10 2  100
b. log 100 = 2

p log q  r  p r  q
c.

Contoh 3:

Hitunglah :

1
2 log 64 2 log
a. b. 8 c. log 1000

5 log 1 1 3 log 1
d. e. 81

Jawab :

2
a. log 64 = x  2 = 64  x = 6

1 1
2
b. log = x  2 =  x = -3

8 8

c. log 1000 = x  10 = 1000  x = 3

d. 5 log 1 = x  5 = 1  x = 0

1 1
3 log 1 1

e. 81 = x  ( ) = 81  x = 4
3