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²logx > ^xlog2
²logx > 1 / ²logx
²log²x > 1
²log²x - 1 > 0
(²logx + 1)(²logx - 1) > 0 (positif)
²logx = -1 dan ²logx = 1
2 pangkat (-1) = x
x = 1/2
dan 2 pangkat 1 = x
x = 2
+++ - - - - +++
---------------------
1/2 2
jadi HP={x<1/2 dan x>2}