求极限：
求极限：
)求下列极限:-|||-(1) lim _(xarrow 1)dfrac ({x)^2-x+1}({(x-1))^2} =-|||-(3) lim _(xarr
2.求极限 lim _(xarrow infty )[ (2+x)(e)^dfrac (1{x)}-x]
极限lim _(xarrow infty )(x)^2(2-xsin dfrac (1)(x)-cos dfrac (1)(x))=A.lim _(xarrow
求极限lim _(xarrow infty )((1-dfrac {1)(2x))}^dfrac (3{2)x}求极限
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
2.求极限 lim _(xarrow +infty )arcsin dfrac (x)(sqrt {{x)^2+1}+x}
[题目]求极限 lim _(xarrow infty )((sin dfrac {2)(x)+cos dfrac (1)(x))}^x= __
求极限lim _(xarrow infty )dfrac (3{x)^2+2x+5}(2{x)^2+3x-1}。求极限。
求极限lim _(xarrow infty )((dfrac {x)(1+x))}^2x+3求极限
求下列极限:-|||-lim _(xarrow +infty )(({2)^x+(3)^x)}^dfrac (1{x)}