An arithmetic sequence has a corresponding series that adds all the terms of the sequence. When the terms are added and the sum is divided by the number of terms, the result is the arithmetic mean or average. The formula for the arithmetic mean is ...
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。
The difference between successive elements in an arithmetic sequence doesn’t have to be 1—in fact, it can be anything. There are two famous arithmetic sequences you’re already familiar with whose successive members have differences of 2: the even and odd positive integers. Positive even integ...
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
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,?
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This makes it sound as if character, which we usually admire, were highly suspect, and Reich actually said that character is neurosis. In other words, we are responding to the world and acting in it either in an appropriate way, which stays in close contact with reality, or in a more ...
看到了几题有趣的英语数学题 并说一下做题思路 For each positive integer n ,the mean of the first n terms of a sequence is n .What is the 2008th term of the sequence 答案是4015 Vertex E of equilateral 三角形ABE is in the interior of unit square ABCD .Let R be the region consisting ...
An arithmetic progression is a sequence of terms in which each two adjacent terms differ by a ratior. Given an arithmetic sequence {eq}a_1, a_2, a_3, ..., a_n {/eq}, we may express the ratio between any two adjacent terms as {eq}r = a_2 - a_...
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