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求极限 lim _(xarrow 1)(1-(x)^2)tan dfrac (pi )(2)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)
求极限lim _(xarrow 0)dfrac (x)(sqrt {1-x)-1}= ()lim _(xarrow 0)dfrac (x)(sqrt {1-x)
5.单选题极限lim _(xarrow dfrac {pi )(2)}((1+cot x))^tan x=( )A.1B.eC.lim _(xarrow dfr
lim _(xarrow 0)((1-x))^dfrac (1{2x)}=( ).=().
极限 lim _(xarrow 1)dfrac ({x)^2-1}(1-x)=( )极限( )A.-2B.0C.2D.1
(1) lim _(xarrow 0)((1-x))^dfrac (1{x)}; ()
[例31) 1988,数三)求极限 lim _(xarrow 1)(1-(x)^2)tan dfrac (pi )(2)x,