求极限limx→2(x/2)1/(x-2).

求极限limx→2(x/2)1/(x-2).
【正确答案】:limx→2(x/2)1/(x-2)=limx→2[(x-2+2)/2]1/(x-2)=limx→2{1+[(x-2)/2]2/(x-2)}1/2=e1/2