解关于x的不等式lg^2x-lgx-2>0.
人气：158 ℃ 时间：2020-01-29 23:42:16
解答
lg^2x-lgx-2＞0
(lgx+1)(lgx-2)＞0
lgx＜-1或lgx＞2
所以0＜x＜1/10或x＞100
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