计算下列极限:-|||-lim _(xarrow 1)(dfrac (2)({x)^2-1}-dfrac (1)(x-1)).

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

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

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

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：

lim _(xarrow 1)dfrac ({x)^2-1}(x-1)(e)^dfrac (1{x-1)}=

A.lim _(xarrow 1)dfrac ({x)^2+x-2}({x)^2-1}=lim _(xarrow 1)dfrac ((x-1)(x+2))((x

计算下列函数的极限。-|||-lim _(xarrow 1)dfrac ({x)^2-3x+2}({x)^2-1}

计算下列极限 (1) lim _(xarrow 0)((1-2{x)^2)}dfrac (1)(xsin x)-|||-__(1) lim _(xarrow 0

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

计算下列极限：(1) lim _(xarrow 0)(x)^2sin dfrac (1)(x);-|||-(2) lim _(xarrow infty )dfr