A:younger
B:biggest
C:young
D:How
(Ⅰ)若曲线y=f(x)在点(1,f(1))处的切线平行于x轴,求a的值;
(Ⅱ)求函数f(x)的极值;
(Ⅲ)当a=1的值时,若直线l:y=kx﹣1与曲线y=f(x)没有公共点,求k的最大值.
点P在第二象限,P到x轴的距离是4,到y轴的距离是3,那么点P的坐标为( )
There are ______shops in this street. ( )