Question

Nilai x yg memenuhi ²log x - *log 2 > 0

Answer 1

²log x - ^xlog 2 > 0
kalikan ²log x
²log x (²log x) - ^xlog 2 (²log x) > 0
²log²x - 1 > 0
(²log x - 1)(²log x + 1) > 0
²log x - 1 = 0
²log x = 1
x = 2
²log x + 1 = 0
²log x = -1
x = ½
x < ½ atau x > 1
syarat x > 0
maka nilai x
0 < x < ½ atau x > 1