3.求下列极限:-|||-(1) lim _(xarrow 0)sqrt ({x)^2-2x+5} ;-|||-(4 lim _(xarrow 0)dfrac
lim _(xarrow 0)dfrac (sqrt {x+1)-1}(x)= () . .
(4) lim _(xarrow 0)dfrac (sqrt {x+1)-1}(x);
(5) lim _(xarrow 1)dfrac (sqrt {5x-4)-sqrt (x)}(x-1) ;
(5) lim _(xarrow 1)dfrac (sqrt {5x-4)-sqrt (x)}(x-1);
(5) lim _(xarrow 1)dfrac (sqrt {5x-4)-sqrt (x)}(x-1);
求lim _(xarrow 3)dfrac (sqrt {x+1)-2}(x-3)求
(7) lim _(xarrow 3)dfrac (sqrt {x+1)-2}(x-3)
(5) lim _(xarrow infty )((dfrac {2x+3)(2x+1))}^x+1;
[题目]-|||-lim _(xarrow infty )dfrac (sqrt {4{x)^2+x-1}+x+1}(sqrt {{x)^2+sin x}}=