a) Find the second term of the sequence.b) Find the fifth term of the sequence. 相关知识点: 试题来源: 解析 a) 12b) 75 结果一 题目 【题目】T he nth term of a sequence is 3n2-1a)Find the second term of the sequence.b) Find the fifth term of the sequence. 答案 【解析】a)112...
百度试题 结果1 题目The nth term of a sequence is u_n, where u_n=95(45)^n, n=1, 2, 3,…Find the value of u_1 and u_2. 相关知识点: 试题来源: 解析 76, 60.8 反馈 收藏
1The nth term of a sequence is 2n−19. Which of the following is/are true?( )Ⅰ. 25 is a term of the sequence.Ⅱ.The sequence has 10 negative terms.Ⅲ.The sum of the first n terms of the sequence is n2−18n.某数列的第n项为2n−19,下列何者正确?( )Ⅰ.25为该数列的其中一...
The nth term of a sequence is 8-na) Work out the first three terms of the sequence.$\square▱\square$b) Work out the value of the first negative term of the sequence.▱ 相关知识点: 试题来源: 解析 a) 7, 6, 5b) -1
【题目】Let an be the nth term of a sequence.Ifa_2=7 , a_4=63 and a_(n+2)=a_(n+1)+a_n for any positive integer n, then as=().设an为某数列的第n项.若 a_2=7 、 a_4=63 及对任意正整数n, a_(n+2)=a_(n+1)+a_n ,则a5=().A.56B.70C.91D.119 ...
【题目】Let an be the nth term of a sequence, If as =21,a6=89 and a_(n+2)=a_n+a_(n+1) for any positive integern, then a1=().设 a_n 为某数列的第n项.若 a_3=21 、a6=89及对任意正整数n, a_(n+2)=a_n+a_(n+1) ,则a1=().A.8B.13C.34D.55 ...
数列是GRE数学中一个比较难的考点,今天和雷哥GRE的数学名师Helen一起学习下GRE数列的相关知识点吧。 我们先看下数列的定义: 接下来我们先看下一道简单的例题 The first term in a certain sequence is 1, the 2nd term in the sequence is 2, and, for all integers n≥3, the nth term in the sequence...
Let an be the nth term of a sequence, If a3=21, a6=89 and an+2=an+an+1 for any positive integer n, then a1=( ). 设an为某数列的第n项.若a3=21、a6=89及对任意正整数n,an+2=an+an+1,则a1=( ). A.8 B.13 C.34 D.55 相关知识点: 试题来源: 解析 A 结果一 题目...
a three term quadratic, terms in any orderNB A1 on e-pen Factorising their quadratic or correct use of formula/completing the square.Cao n=10 Award A0 if single correct answer not identified.If final answers shown without working (implying calculator solution) give M1 only if both correct ...
(a) The nth term of a sequence is 3n + 4 What is the 8th term of this sequence? ___ (b) The nth term of a different sequence is Write the first three terms of this sequence. 答案 (a) 28 (b) Gives all three correct terms in any order eg 1,0,5 Gives any two corre...