题目

183.设 lim _(xarrow 0)[ cos x-f(x)] =1 ,则下列等式正确的是 __-|||-A. lim _(xarrow 0)f(x)=1 B. lim _(xarrow 0)f(x)cdot cos x=1-|||-C. lim _(xarrow 0)f(x)=-1 D. lim _(xarrow 0)[ f(x)+cos x] =1

题目解答

答案