求下列极限:(1)lim _(xarrow 1)dfrac ({x)^2+x-2}({x)^2-3x+2};(2)lim _(xarrow 1)dfrac ({
求极限lim _(xarrow 2)(dfrac (1)({x)^2-3x+2})-(dfrac (1)(x-2))-|||-__求极限
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
1.计算下列极限:-|||-(1) lim _(xarrow -1)dfrac ({x)^2+2x+1}(x-1) ;-|||-(3) lim _(xarrow
计算下列函数的极限。-|||-lim _(xarrow 1)dfrac ({x)^2-3x+2}({x)^2-1}
1.求下列极限.-|||-(1) lim _(xarrow -2)(3(x)^2-5x+2) --|||-(4) lim _(xarrow 1)dfrac ({
求lim _(xarrow infty )dfrac ({x)^2-3x+2}({x)^2-1}-|||-__求
1.求下列极限:-|||-(1) lim _(xarrow 0)dfrac (sin 2x)(x);-|||-(3) lim _(xarrow dfrac {p
)求下列极限:-|||-(1) lim _(xarrow 1)dfrac ({x)^2-x+1}({(x-1))^2} =-|||-(3) lim _(xarr