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。
5. Given that { $$ a _ { n } $$} is an arithmetic (equal difference) sequence,$$ i f a _ { 1 } = 1 0 , $$$ a n d a _ { 1 0 0 9 } = - 4 0 $$,then the value o f a_{2017 is( )(A)-90. (B) -70. (C)70. (D)90. 相关...
A quick way of calculating the mean of an arithmetic sequence is to use the observation that, when the first and last terms are added, the sum is the same as when the second and next to last terms are added or the third and third to last terms. As a result, the sum of the sequen...
Suppose that \{a_n\} is an arithmetic sequence with what is the value of? Express your answer as a common fraction. Sum =N/2*[2F + (N - 1) * D, where N=Number of terms, F=First term, D=Common difference. First term =101/200, Common difference =1/100, Number of terms =10...
View Solution OMR|Properties Of An Arithmetic Progression|Questions|Arithmetic Mean View Solution Introduction of sequence and series|Arithmetic progression|Arithmetic mean View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions ...
Example 2: In an arithmetic sequence a, the sum of first n terms is Sn. I fS_3=6 , a_1=4 , find the common difference d. It is ( ).(A)1( B 5/3(C)-2(D)3 相关知识点: 试题来源: 解析Solution: (C) Method 1: By formula(3), we have d3 1 3 1 3 1 2 3-1 2 2...
百度试题 结果1 题目Suppose that {an} is an arithmetic sequence with a1+a2+⋯+a100=100 and a101+a102+⋯+a200=200. What is the value of a2−a1?( ) A.0.0001 B.0.001 C.0.01 D.0.1 E.1 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
An arithmetic sequence is a list of numbers, called terms, where consecutive terms have a common difference. Each term in the sequence can be calculated by adding the common difference to the previous term. An example of an arithmetic sequence is {eq}\{4, 7, 10, 13, 16, ...\} {/...
Ask a question Search AnswersLearn more about this topic: Sum of Arithmetic Sequence | Formula & Examples from Chapter 21 / Lesson 6 443K Learn what an arithmetic sequence is and explore different examples of an arithmetic sequen...
If the sequence has an infinite limit or the limit does not exist, the sequence is said to be divergent. Answer and Explanation: {eq}\displaystyle \eqalign{ & \sum\limits_{n = 1}^\infty {{a_n}} = \frac{\pi }{2...