已知函数f(x)=lnx﹣ex+a. (Ⅰ)若曲线f(x)在点(1,f(1))处

已知函数fx)=lnxex+a

)若曲线fx)在点(1f1))处的切线与x轴正半轴有公共点,求a的取值范围;

)求证:a1时,fx)<﹣e1

答案

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