1.计算下列极限:-|||-(1) lim _(xarrow -1)dfrac ({x)^2+2x+1}(x-1) ;-|||-(3) lim _(xarrow 1)dfrac ({x)^2-3x+2}(x-1) =-|||-(5) lim _(xarrow 1)dfrac (sqrt {x)-1}({x)^2+5x-6} =-|||-(2) lim _(xarrow 2)dfrac (x-1)(sqrt {x+1)} ;-|||-(4) lim _(xarrow infty )dfrac ({x)^2+2x+1}({x)^4-3x+1} ;-|||-(6) lim _(harrow 0)dfrac ({(x+h))^2-(x)^2}(h) ;1.计算下列极限:-|||-(1) lim _(xarrow -1)dfrac ({x)^2+2x+1}(x-1) ;-|||-(3) lim _(xarrow 1)dfrac ({x)^2-3x+2}(x-1) =-|||-(5) lim _(xarrow 1)dfrac (sqrt {x)-1}({x)^2+5x-6} =-|||-(2) lim _(xarrow 2)dfrac (x-1)(sqrt {x+1)} ;-|||-(4) lim _(xarrow infty )dfrac ({x)^2+2x+1}({x)^4-3x+1} ;-|||-(6) lim _(harrow 0)dfrac ({(x+h))^2-(x)^2}(h) ;

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

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

计算函数极限(1)lim _(xarrow 1)dfrac (x-3)(x+2)(2)lim _(xarrow 1)dfrac (x-3)(x+2)(3)lim

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

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

1.计算下列极限:-|||-(1) lim _(xarrow 2)dfrac ({x)^2+5}(x-3) =-|||-(4) lim _(xarrow 1)d

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

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

1.计算下列极限:-|||-(1) lim _(xarrow 2)dfrac ({x)^2+5}(x-3) ;-|||-(4) lim _(xarrow 0)d