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

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

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

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

求极限lim _(xarrow infty )((1-dfrac {1)(2x))}^dfrac (3{2)x}求极限

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

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

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

(3) lim _(xarrow infty )((dfrac {2x+3)(2x+1))}^x+1

(3) lim _(xarrow infty )((dfrac {2x+3)(2x+1))}^x+1;

(3) lim _(xarrow infty )((dfrac {2x+3)(2x+1))}^x+1;