8.对于数列(xn),若 _(2k-1)arrow a(karrow infty ), _(2k)arrow a(karrow infty ), 证明: _(n)arrow a(narrow infty ),

1.设(xk)为R^n中的点列, in (R)^n, lim _(karrow infty )(x)_(k)=a, 证明 lim _(karrow infty

求极限 lim _(n arrow infty) (sqrt(n^2)+a^(2))/(n)=________.求极限 $\lim _{n \rightarro

对独立同分布的随机变量列(xn),设 (X)_(n)=(l)_(2), ({X)_(n)}=(sigma )^2 , In ,-|||-则arrow infty

5.根据函数极限或无穷大定义,填写下表:-|||-(x)arrow A (x)arrow infty (x)arrow +infty (x)arrow -i

5.根据函数极限或无穷大定义,填写下表:-|||-(x)arrow A (x)arrow infty (x)arrow +infty (x)arrow in

5.根据函数极限或无穷大定义,填写下表:-|||-(x)arrow A (x)arrow infty (x)arrow +infty (x)arrow -i

lim _(n arrow infty) n((1)/(1+n^2)+(1)/(2^2)+n^(2)+...+(1)/(n^2)+n^(2))= _____.$

lim _(arrow infty )dfrac ({3)^n+(2)^n}({2)^n-(3)^n}=_________。_________。

lim _(n arrow infty)(1-(1)/(2^2))(1-(1)/(3^2)) ...(1-(1)/(n^2))= ____ $\lim _{n

((1+dfrac {1)(x))}^(x^2)-|||-.-|||-.arrow +infty e .x