lim _(xarrow 0)dfrac (sqrt {x+1)-1}(x)= () ．

(4) lim _(xarrow 0)dfrac (sqrt {x+1)-1}(x);

8.计算下列极限：(1) lim _(xarrow 0)dfrac (sin 4x)(sqrt {x+1)-1}(1) lim _(xarrow 0)dfrac

3.求下列极限:-|||-(1) lim _(xarrow 0)sqrt ({x)^2-2x+5} ;-|||-(4 lim _(xarrow 0)dfrac

求极限lim _(xarrow 0)dfrac (x)(sqrt {1-x)-1}= ()lim _(xarrow 0)dfrac (x)(sqrt {1-x)

求下列极限.-|||-lim _(xarrow 0)dfrac ({e)^x-sqrt (x+1)}(x);

(5) lim _(xarrow -1)dfrac (sqrt {x+5)-2}(x+1):

1 计算下列极限1) lim _(xarrow 0)dfrac (sqrt {1+xsin x)-sqrt (cos x)}(xtan x);1) lim _(

求lim _(xarrow 3)dfrac (sqrt {x+1)-2}(x-3)求

(7) lim _(xarrow 3)dfrac (sqrt {x+1)-2}(x-3)

lim _(xarrow 0)[ dfrac (1)(2x)-dfrac (1)(x({e)^x+1)}] ;