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

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

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

求下列极限（3）lim _(xarrow infty )(dfrac ({x)^3}(2{x)^2-1}-dfrac ({x)^2}(2x+1))求下列极限（3

求lim _(xarrow 0)dfrac ({x)^2+3x}(2{x)^2-1}.求.

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

2.求极限lim _(xarrow 0)(dfrac (1)(xsin x)-dfrac (cos x)({x)^2}) ()2.求极限

计算极限lim _(xarrow 0)dfrac ({x)^2+3x}(2{x)^2-1}.计算极限.

求极限lim _(xarrow 1)dfrac (sqrt {2x-1)-1}({x)^2-1}求极限

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

求lim _(xarrow infty )dfrac ({x)^2-3x+2}({x)^2-1}-|||-__求