$\lim _{n \rightarrow \infty}\left(1-\frac{1}{2^{2}}\right)\left(1-\frac{1}{3^{2}}\right) \cdots\left(1-\frac{1}{n^{2}}\right)=$ ____
求下列数列的极限:lim_(ntoinfty)(1-(1)/(2^2))(1-(1)/(3^2))cdot...cdot(1-(1)/(n^2))求下列数列的极
1、lim_(ntoinfty)(1-(3)/(n^2))=( )A. 0B. 1C. 3D. 不存在
lim _(n arrow infty) n((1)/(1+n^2)+(1)/(2^2)+n^(2)+...+(1)/(n^2)+n^(2))= _____.$
设1-|||-_(1)= -2,1-|||-_(1)= -2,1-|||-_(1)= -2,若1-|||-_(1)= -2线性相关,则1-|||-_(1)= -
1.利用初等行变换法求下列矩阵A的逆矩阵:-|||-1 1-|||-(1)-|||--1 3-|||-1-|||-(2) 2-|||-n-|||-1 2 0-|
lim _(x arrow infty)(1-(1)/(3x))^x= ( )A. $e^{-3}$B. $e^{-\frac{1}{3}}$C. $e^{\f
-1 0 -1 0 0 的值为 ()-|||-A 1-|||-B ((-1))^dfrac (n(n-1){2)}-|||-C -1-|||-D ((-1))
设向量组 1 1 2 2 1-|||-_(1)= 0 2 -1-|||-2 _(2)=-|||-0 _(3)= 1-|||-3 _(4)= 5-|||--1 ,
已知向量组0 1-|||-A:α1= 1 ,α2= 1-|||-1 0;0 1-|||-A:α1= 1 ,α2= 1-|||-1 0,证明向量组0 1-|||-
5.计算下列行列式:-|||-1 1 1 1-|||-1 -1 1 1-|||-(2)-|||-1 1 -1 1-|||-1 1 -1-|||-2 1 1 0-