题目The sequence , , , , is an arithmetic progression. What is ?( ) A: B: C: D: E: 相关知识点: 试题来源: 解析 B N/A. 反馈 收藏
【题目】In an arithmetic sequence, what is the relationship b etween the second term + eighth term and the fourt h term + sixth term? 相关知识点: 试题来源: 解析 【解析】 $$ a _ { 2 } + a _ { 8 } = a _ { 4 } + a _ { 6 } $$ ...
Arithmetic sequences can also have an infinite number of terms. For example, the first sequence above with an infinite number of terms would be 12, 15, 18, ... and that sequence continues to infinity. Arithmetic Mean An arithmetic sequence has a corresponding series that adds all the terms ...
Arithmetic SequenceWe define an arithmetic sequence as a sequence which has a common difference between all consecutive terms. This sequence is very useful in simulating certain scenarios in which there is a common difference.Answer and Explanation: The general formula for the arithmetic sequence is ...
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 ...
结果1 题目1. What is the first term of an arithmetic sequence whose 19th term is 123 and2nd term is 4?(A)-3(B)1(C)2(D)7 相关知识点: 试题来源: 解析 1.Ans: (123-4)÷(19-2)=71.Ans: (123-4)÷(19-2)=7 反馈 收藏
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 arithmetic sequence formulas are given as,Formula 1: The arithmetic sequence formula to find the nth term is given as,an = a1 + (n - 1) dwhere,an = nth term, a1 = first term, and d is the common differenceFormula 2: The sum of first n terms in an arithmetic sequence is ...
If the terms of a sequence are t1, t2, t3, . . . , tn, what is the value of n ? (1) The sum of the n terms is 3,124. (2) The average (arithmetic mean) of the n terms is 4. 选项: A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. ...
A series present in the form of a, a+d, a+2d, a+3d, ... is generally represented as an arithmetic sequence. Here, a is the first term of the arithmetic sequence and d is the common difference between the consecutive terms of the arithmetic sequence.Answer...