18 单选 lim_(n to infty) ((n)/(n+1))^n=( ).A. eB. 1C. 1/eD. ∞
根据数列极限的定义证明:(1) lim_(n to infty) (1)/(n^2) = 0;(2) lim_(n to infty) (3n+1)/(2n+1
12 lim_(n to infty) (1+2+3+...+(n-1))/(n^2);12 $\lim_{n \to \infty} \frac{1+2+3+
1/10 单选题(分值10.0分,难度 易)1、已知函数 f(x)=4x+5, 则 f(1)=()A. 5B. 3C. 6D. 9
59 lim_(n to infty ) sum_(i=1)^n (n)/(n^2)+i^(2+1)=____59 $\lim_{n \to \infty }
单选题 (分值1.0分,难度:易)A. 闪光B. 火焰C. 缺点D. 面粉
设 A_n = (0, (1)/(n)),n in N,则 lim_(n to infty) A_n = ( )A. $(0, 1)$B. $(0, \frac
2/30 单选题(分值4.0分,难度:易)-|||-计算 lg dfrac (1)(100)= ()()-|||-bigcirc
5/10 单选题(分值1.0分,难度:易)It is ___ who am to blame.A. meB. IC. weD. us
若 lim_(n to infty) u_n = 0,则级数 sum_(n=1)^infty u_n()A. 一定收敛B. 一定发散C. 绝对收敛D. 可能收敛