求极限__-|||-lim _(narrow infty )dfrac (n)(ln n)(sqrt [n](n)-1).求极限.
1.利用数列极限的" -N 定义证明:-|||-(1) lim _(narrow infty )dfrac (1)({n)^2}=0;-|||-(2) lim
证明:lim _(narrow infty )(({2)^n+(4)^n+(6)^n)}^dfrac (1{n)}=6.证明:.
-|||-求 lim _(narrow infty )sum _(k=1)^ndfrac (k)({n)^2}ln (1+dfrac (k)(n))
(3)收敛, lim _(narrow infty )(2+dfrac (1)({n)^2})=2 --|||-(4)收敛, lim _(narrow inft
根据数列极限定义证明:(1) lim _(narrow infty )dfrac (1)({n)^2}=0-|||-(2) lim _(narrow infty
+(n-1)ln dfrac (n-1)(n)] = ____
→(a)→∞-|||-lim _(narrow infty )(x)_(n)=+infty lim _(narrow infty )(y)_(n)=infty
已知 lim _(narrow infty )(a)_(n)=2 lim _(narrow infty )(b)_(n)=3已知 lim _(narrow in
1.利用 lim _(narrow infty )((1+dfrac {1)(n))}^n=e 求下列极限:-|||-(1) lim _(narrow inft