(1)求曲线y=f(x)在点(1,f(1))处的切线方程;
(2)求证: lnx≥−1ex ;
(3)判断曲线y=f(x)是否位于x轴下方,并说明理由.
下列各组划线字注音都正确的一项是( )
Lao She's Teahouse ______ the changes in Chinese society over fifty years.