(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) =
[题目] lim _(xarrow 0)(dfrac (1)({sin )^2x}-dfrac ({cos )^2x}({x)^2})= __
(8) lim _(xarrow 0)dfrac (1-cos 2x)(xln (1+x)) ;
[题目]求 lim _(xarrow 0)(dfrac (1)({sin )^2x}-dfrac ({cos )^2x}({x)^2})
[题目]求 lim _(xarrow 0)(dfrac (1)({sin )^2x}-dfrac ({cos )^2x}({x)^2})
(3) lim _(xarrow 0)dfrac (1-cos 3x)({sin )^2x}
求极限lim _(xarrow 0)dfrac (ln (1+5xsin x))(1-cos x).求极限.
计算极限lim _(xarrow 0)((cos 2x))^dfrac (1{{x)^2}}计算极限