求下列极限.-|||-lim _(xarrow -1)(dfrac (1)(x+1)-dfrac (4)({x)^3+1})

求极限__-|||-lim _(xarrow -1)(dfrac (1)(x+1)-dfrac (3)({x)^3+1})求极限

[例 1-14] 求 lim _(xarrow -1)(dfrac (1)(x+1)-dfrac (3)({x)^3+1})

求下列极限：lim _(xarrow 1)(dfrac (3)(1-{x)^3}-dfrac (1)(1-x))-|||-__求下列极限：

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 1)(dfrac (1)(1-x)-dfrac (3)(1-{x)^3})-|||-__ __.求极限：.

)求下列极限:-|||-(1) lim _(xarrow 1)dfrac ({x)^2-x+1}({(x-1))^2} =-|||-(3) lim _(xarr

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

求下列极限：lim _(xarrow 0)dfrac (1)(x)(dfrac (1)(sin x)-dfrac (1)(tan x))-|||-__ __求下

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

求极限lim _(xarrow 0)dfrac (x({e)^x+1)-2((e)^x-1)}({x)^3}-|||-__求极限