求极限lim _(xarrow 2)dfrac (x-2)(sqrt {2x-3)-1}-|||-__.求极限.
⑦ lim _(xarrow 4)dfrac ({x)^2-6x+8}({x)^2-5x+4};
求下列各极限:lim _(xarrow infty )dfrac ({(2x-3))^20((3x+2))^30}({(5x+1))^50}。求下列各极限:。
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
求 lim _(xarrow 2)dfrac ({x)^3-1}({x)^2-5x+3}
1.求下列极限.-|||-(1) lim _(xarrow -2)(3(x)^2-5x+2) --|||-(4) lim _(xarrow 1)dfrac ({
3.求下列极限:-|||-(1) lim _(xarrow 0)sqrt ({x)^2-2x+5} ;-|||-(4 lim _(xarrow 0)dfrac
)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 ({