设直线l1，l2分别是函数f（x）= {−lnx,0<x<1lnx,x>1 图象上点P1，P2处的切线，l1与l2垂直相交于点P，且l1，l2分别与y轴相交于点A，B，则△PAB的面_刷题宝

题干

设直线l₁，l₂分别是函数f（x）= {−lnx,0<x<1lnx,x>1 图象上点P₁，P₂处的切线，l₁与l₂垂直相交于点P，且l₁，l₂分别与y轴相交于点A，B，则△PAB的面积的取值范围是（　　）

A：（0，1）

B：（0，2）

C：（0，+∞）

D：（1，+∞）

上一题下一题 0.0难度选择题更新时间:2018-05-27 11:41:03

答案(点此获取答案解析）

A

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