求下列极限lim _(xarrow 4)dfrac (sqrt {2x+1)-3}(sqrt {x-2)-sqrt (2)}求下列极限
lim _(xarrow 4)dfrac (sqrt {2x+1)-3}(sqrt {x-2)-sqrt (2)}=..
.求下列极限:-|||-(6) lim _(xarrow 4)dfrac (sqrt {2x+1)-3}(sqrt {x-2)-sqrt (2)} ;
(21)lim _(xarrow 4)dfrac (sqrt {2x+1)-3}(sqrt {x-2)-sqrt (2)}(21)
3.求下列极限:-|||-(1) lim _(xarrow 0)sqrt ({x)^2-2x+5} ;-|||-(4 lim _(xarrow 0)dfrac
15.计算下列极限:-|||-(1) lim _(xarrow 0)sqrt ({x)^2-4x+2} ;-|||-(3) lim _(xarrow 0)dfr
(4) lim _(xarrow 1)dfrac ({x)^2-sqrt (x)}(sqrt {x)-1};
求下列极限:-|||-(6) lim _(xarrow +infty )(x)^dfrac (3{2)}(sqrt (x+2)-2sqrt (x+1)+sqrt
[例3]求极限 lim _(xarrow infty )dfrac (sqrt {4{x)^2+x-1}+x+1}(sqrt {{x)^2+sin x}}
求极限lim _(xarrow 2)dfrac (x-2)(sqrt {2x-3)-1}-|||-__.求极限.