题目：lim _(xarrow infty )dfrac ({x)^2-1}(2{x)^2-x-1}=-|||-__

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

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

求lim _(xarrow infty )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 ({

[题目] lim _(xarrow infty )((1+dfrac {2)(x))}^x= __

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

[题目]求 lim _(xarrow infty )((sin dfrac {2)(x)+cos dfrac (1)(x))}^x

极限lim _(xarrow infty )(x)^2(2-xsin dfrac (1)(x)-cos dfrac (1)(x))=A.lim _(xarrow

lim _(xarrow infty )(2-dfrac (1)(x)+dfrac (1)({x)^2});;

[题目]极限 lim _(xarrow infty )xsin dfrac (2x)({x)^2+1}= __