m=a1+an2m= \frac{a_1+a_n}{2}m=2a1+an Infinite arithmetic sequences don't have a last term, and therefore their mean is undefined. Instead, a mean for a partial sum can be found by limiting the sum to a defined number of terms. In that case, the partial sum and ...
百度试题 结果1 题目【题目】In an arithmetic sequence, what is the relationship between the second term + eighth term and the fourthterm+sinthterm? 相关知识点: 试题来源: 解析 【解析】a_2+a_8=a_4+a_6
A 该算数数列的第100个数是:1,5,9,13,17,21,25,⋯? 要从算术序列的第一项到第100项,我们必须加上99倍的公差.第一项为1,公差为5−1=9−5=13−9=⋯=4,因此第100项为1+4(99)=397. 故选A.结果一 题目 What is the 100th number in the arithmetic sequence: 1,5,9,13,17,21,25...
The sequence 2, 4, 6, 8,... is an arithmetic sequence. What is the common difference? A. 1 B. 2 C. 3 D. 4 相关知识点: 试题来源: 解析 B。解析:这个数列是等差数列,后一项减去前一项为定值,4-2=2,6-4=2,8-6=2,所以公差是 2。
百度试题 结果1 题目【题目】T he first four terms of an arithmetic sequence arep, 9, 3p-q, and 3p+q. What is the 2010th term of this sequence?()A.8041B.8043C.8045D.8047E.8049 相关知识点: 试题来源: 解析 【解析】A
10、 连续数例 1:In an increasing sequence of 10 consecutive integers, the sum of the first 5 integers is 560. What is the sum of the last 5 integers in the sequence?(A) 585 (B) 580 (C )575 (D)570 (E) 565例 2:If n is an integer greater than 6, which of the following mus...
Arithmetic is a branch of mathematics. Arithmetic includes different mathematical operations such as addition, subtraction, multiplication and division. Learn the basics of arithmetic with examples at BYJU’S.
it sounds complicated, but it’s really pretty simple. An arithmetic sequence is a sequence of numbers where the difference between any two successive elements is always the same constant value. For example, the sequence of years since the start of the new millennium is an arithmetic sequence:...
Today it is less of a movement and more of a tendency or approach within the whole field of self- development. In the early days, one man was the pioneer of this way of looking at the world: Abraham Maslow. He was an academic psychologist who later became president of the American ...
百度试题 结果1 题目In an arithmetic sequence with 13 terms, if the seventh term is 20, what is the sum of all the terms?相关知识点: 试题来源: 解析 260. 反馈 收藏