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(log1/2x)^2-log1/2x-2>0,x范围
人气:484 ℃ 时间:2020-10-01 20:28:23
解答
令log(1/2)x=t则不等式化为:t^2-t-2>0(t+1)(t-2)>0t2即:log(1/2)x2log(1/2)xlog(1/2)(1/4) x>2 0
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