5.单选题极限lim _(xarrow dfrac {pi )(2)}((1+cot x))^tan x=( )A.1B.eC.lim _(xarrow dfrac {pi )(2)}((1+cot x))^tan xD.不存在

求极限lim _(xarrow 0)cot x(dfrac (1)(x)-dfrac (1)(sin x))-|||-__解法如下，原式lim _(xarrow

求极限 lim _(xarrow 1)(1-(x)^2)tan dfrac (pi )(2)x

lim _(xarrow 1)(1-x)tan dfrac (pi x)(2)-|||-__..

求极限lim _(xarrow 0)cot x(dfrac (1)(sin x)-dfrac (1)(x)) ()-|||-__ __求极限

1.求下列极限:-|||-(1) lim _(xarrow 0)dfrac (sin 2x)(x);-|||-(3) lim _(xarrow dfrac {p

lim _(xarrow 0)cot x(dfrac (1)(sin x)-dfrac (1)(x))= __

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

(8) lim _(xarrow dfrac {pi )(2)}dfrac (tan x)(tan 3x)

(8) lim _(xarrow dfrac {pi )(2)}dfrac (tan x)(tan 3x)

[例31) 1988,数三)求极限 lim _(xarrow 1)(1-(x)^2)tan dfrac (pi )(2)x,