Which sequence is neither arithmetic nor geometric? A. 1, 2, 3, 4,... B. 2, 4, 6, 8,... C. 1, 4, 9, 16,... D. 3, 6, 9, 12,... 相关知识点: 试题来源: 解析 C。解析:A、B、D 分别是公差为 1、2、3 的等差数列,而 C 数列不是等差数列也不是等比数列。
解析 【解析】arithmetic sequence是等差数列的意思如果是等差数列那么I和II肯定符合啊I:an=a1+(n-1)d那么2an=2a1+(n-1)*2*d,则首项为2a1,公差为2d的等差数列II:an=a1+(n-1)dan-3=a1-3+(n-1)d,则首项为a1-3,公差为d的等差数列你举的例子不符合等差数列。。
相关知识点: 试题来源: 解析 C Ⅰ) π45−π30≠π60−π45 ∴选项Ⅰ错误. Ⅱ) 60π−45π=15π 45π−30π=15π ∴选项Ⅱ正确. Ⅲ) (π−60)−(π−45)=−15 (π−45)−(π−30)=−15 ∴选项Ⅲ正确.反馈 收藏 ...
2015amc8 18***An arithmetic sequence is a sequence in which each term after the first is obtained by adding a constant to the previous term. Each row and each column in this 5×5 array is an arithmetic sequence with five terms. What is the value of X? A.21 B.31 C.36 D.40 E....
结果1 题目 What is the sum of the first 4 terms of the arithmetic sequence in which the 6th term is 8 and the 10th term is 13? () A. 10.5 B. 14.5 C. 18 D. 21.25 E. 39.5 相关知识点: 试题来源: 解析 B 反馈 收藏
Answer to: Which is larger, the 10th term of an arithmetic sequence that begins with the terms 0 and 100 or the 10th term of a geometric sequence...
It is an enhancement of the golang standard library net/smtp. Stars:19. chasquid - SMTP server written in Go. ⬆ back to top Embeddable Scripting Languages Embedding other languages inside your go code. expr - Expression evaluation engine for Go: fast, non-Turing complete, dynamic typing,...
aThe rest of this special issue is dedicated to presenting a nice selection of timely, ongoing research. 其余这个特别问题致力提出实时性,持续的研究的一种好的选择。 [translate] a我会从楼梯间撤离 I can from the stair hall evacuation [translate] aThe sequence generates random arithmetic calculations ...
Sequence: In mathematics, we have two important types of sequences: Arithmetic sequence and Geometric sequence. In arithmetic sequence, the difference between the two terms i.e. any term of sequence and its previous term is the same whereas, in a geometric sequence, the ...
For relative quantification of mRNA levels, TaqMan PCR was carried out with an SDS 7900HT Sequence Detection System (Applied Biosystems). PCRs were performed with 0.8 μL (50–200 ng) of cDNA using Platinum Quantitative PCR SuperMix-UDG (Invitrogen) under standard reaction conditions. The ...