练习闪卡: 高考数学：数列基础与求和 | Zestly

Question 1

等差数列通项公式

Accepted Answer

$a_n = a_1 + (n-1)d$

Question 2

等差数列求和公式

Accepted Answer

$S_n = \frac{n(a_1 + a_n)}{2} = na_1 + \frac{n(n-1)}{2}d$

Question 3

等比数列通项公式

Accepted Answer

$a_n = a_1 q^{n-1}$

Question 4

等比数列求和公式 ($q 
eq 1$)

Question 5

数列前n项和与通项关系

Question 6

等差中项定义

Question 7

等比中项定义

Question 8

等差数列下标性质

Question 9

等比数列下标性质

Question 10

常数列的特征

Question 11

斐波那契数列递推式

Question 12

等差数列和的函数特征