The sum of the first five terms of an arithmetic sequence is 50. If the first term is 5, what is the common difference? A. 3 B. 4 C. 5 D. 6 相关知识点: 试题来源: 解析 B。解析:设公差为 d,根据等差数列求和公式,S5=5a1+(5×4/2)d=50,a1=5 代入可得 25+10d=50,解得 d=25...
结果1 题目 6. The first five terms of an arithmetic sequence are27 12 17 22Write down, in terms of n, an expression for the nth term of this sequence.5n-3...(Total 2 marks) 相关知识点: 试题来源: 解析 5n-3 反馈 收藏 ...
Write the first 5 terms of the sequence below. u_n = n(n+1) If f ( 1 ) = 6 , f ( x ) = f ( x 1 ) 3 , write the first 5 terms of this sequence. Write the first five terms of the sequence. a_n = {(3 n)!} / {(n -...
Find the first six terms of the sequence: a1 = 1, an = 4 * an - 1. Find the first six terms of the sequence a_1 = -6, \ a_n = 4a_{n-1} . Find the first six terms of the sequence: a1 = 4, an = an - 1 + 8. Find the first six terms of the seq...
RS AGGARWAL-ARITHMETIC PROGRESSION-Exercise 11A Write first 4 terms in each of the sequences : (i) a(n) = (5n+2) (... 02:00 Find first five terms of the sequence, defiend by a(1) =1 , a(n) =... 01:22 find first 5 terms of the sequences, defined by a(1) =-1 , a...
题目 14. The first five terms of an arithmetic sequence are2 9 16 23 30Find, in terms of n, an expression for the nth term of this sequence.7n-5-...(Total 2 marks) 相关知识点: 试题来源: 解析 7n-5 反馈 收藏
The sum of the first five terms in an arithmetic sequence (等差数列) is 30. The sum of the last five terms is 95. The sum of all the terms is 225. How many terms are there in this sequence? 相关知识点: 试题来源: 解析 18 一个等差数列的前五项和为30,最后五项和为95,所有项之和为...
Answer to: If f ( 1 ) = 6 , f ( x ) = f ( x 1 ) 3 , write the first 5 terms of this sequence. By signing up, you'll get thousands of...
First Five Terms of Arithmetic Sequence: Use the given conditions or values and the general term of an arithmetic sequence to compute the common difference between the terms, then plug the values of the first term, common difference, and the termnin...
Write the first five terms of the sequence whosenthterms are :an=2n View Solution If pth,qth and rth terms of an A.P. are a, b, c respectively, then sho... 05:39 If pth, qth, and rth terms of an A.P. are a ,b ,c , respectively, the... ...