.lim _(xarrow infty )xsin dfrac (1)(2x)= __
(15)lim _(xarrow 0)dfrac (1-cos 2x)(xsin x)(15)
(3) lim _(xarrow 0)dfrac (1-cos 2x)(xsin x) ()-|||-__
(4) lim _(xarrow 0)dfrac (1-cos 2x)(xsin x) =
lim _(xarrow infty )xsin dfrac (2x)({x)^2+1}=________.________.
[题目]-|||-计算 lim _(xarrow 0)dfrac (1-cos 2x)(xsin x)
求极限:lim _(xarrow 0)dfrac (1-{x)^2-(e)^-(x^2)}(x{sin )^3(2x)} 求极限:
[题目]极限 lim _(xarrow infty )xsin dfrac (2x)({x)^2+1}= __
lim _(xarrow 0)[ dfrac (1)(2x)-dfrac (1)(x({e)^x+1)}] ;
极限lim _(xarrow 0)dfrac ({int )_(0)^(x^2)(e)^tdt}(2x)=()A、 lim _(xarrow 0)dfrac (