lim _(xarrow infty )xsin dfrac (1)(x)= __
[题目]极限 lim _(xarrow infty )xsin dfrac (2x)({x)^2+1}= __
极限lim _(xarrow infty )(x)^2(2-xsin dfrac (1)(x)-cos dfrac (1)(x))=A.lim _(xarrow
.lim _(xarrow infty )xsin dfrac (1)(2x)= __
[题目] lim _(xarrow 0)xsin dfrac (1)(x)
[题目] lim _(xarrow 0)(dfrac (1)({x)^2}-dfrac (1)(xsin x))
求lim _(xarrow infty )xsin dfrac (2)(x)求
lim _(xarrow infty )(dfrac (1)(x)sin 5x+xsin dfrac (8)(x))=
lim _(xarrow infty )xsin dfrac (2x)({x)^2+1}=________.________.
(3) lim _(xarrow infty )xsin dfrac (x)(2{x)^2+1} ,