(6) lim _(xarrow a)dfrac ({sin )^2x-(sin )^2a}(x-a).

lim _(xarrow a)dfrac (sin x-sin a)(x-a)。。

lim _(xarrow 2)dfrac (sin (x-2))({x)^2-4}=lim _(xarrow 2)dfrac (sin (x-2))({x)^2

求lim _(xarrow infty )dfrac (sin dfrac {3)(x)}(sin dfrac {2)(x)}求

若lim _(xarrow 0)dfrac ({(1+a{x)^2)}^sin x-1}({x)^3}=6-|||-__，则lim _(xarrow 0)dfr

计算下列极限lim _(xarrow 0)(x)^2sin dfrac (1)(x)lim _(xarrow 0)(x)^2sin dfrac (1)(x)计算

lim _(xarrow dfrac {pi )(2)}((sin x))^tan x=（ ）（ ）

6.求下列极限:-|||-lim _(xarrow 0)dfrac (ln ({sin )^2x+(e)^x)-x}(ln ({e)^2x-(x)^2)-2x}

lim _(xarrow 0)dfrac ({x)^2sin dfrac (1)(x)}(tan x)=A.0B.1C.lim _(xarrow 0)dfrac

lim _(xarrow 0)dfrac (sin 4x)(sin x)= )-|||-__lim _(xarrow 0)dfrac (sin 4x)(sin

(3) lim _(xarrow 0)dfrac (sin 2x)(sin 5x);