[(6.1-4.6)÷0.6]×8.5=____
计算下列各题
(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.
某同学把某地的地理位置记作:东经116°、纬度40°这个地点在地球表面有( )
—What do you think of the robots in the future?
—I think they won't __________ do all the work like humans.