若f(x)与g(x)可导,Lim f(x)=Limg(x)=0,且Limf(x)/g(x)=A,x趋于a.则
A.必有Limf‘（x)/g'(x)=B存在,且A=B.x趋于a.
B.必有LImf'(x)/g'(x)=B,且A不等于B.x趋于a.
C如果Limf'(x)/g'(x)=B存在,且A=B.x趋于a.
D.如果LImf'(x)/g'(x)=B存在,不一定有A=B.x趋于a.
人气：243 ℃ 时间：2019-10-19 17:53:17
解答
A
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