A: However strange might it sound
B: However strange it might sound
C: However it might sound strange
D: Strange however it might sound
设P={x|x2﹣2x﹣3≤0},a= 2 ,则下列关系中正确的是( )
设函数f(x)在x0处可导,则lim△x→0fx0-△x-fx0△x等于( )