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设曲线y=(ax-1)ex在点A(x,y1)处的切线为l1,曲线y=(1-x)e-x在点B...
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设曲线y=(ax-1)e
x在点A(x,y
1)处的切线为l
1,曲线y=(1-x)e
-x在点B(x,y
2)处的切线为l
2.若存在
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAjCAYAAAAg/NwXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
,使得l
1⊥l
2,则实数a的取值范围为________.
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