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