百度试题 结果1 题目 The sequence is either arithmetic or geometric. Find a formula for the nth term of each sequence. -2,1,4,7,...\ n=15 相关知识点: 试题来源: 解析 a_n=3n-5 反馈 收藏
Explicit formula is useful to find any term of the sequence, without knowing the previous term. The explicit formula for the arithmetic sequence is an = a + (n - 1)d, and any term can be computed by substituting the n value for the term.
For example, in the sequence 1, 4, 7, 10, 13, the first term is 1, the second term is 4, and so on. The nth term can be calculated using various methods, and Newton's Little Formula is one such approach. Newton's Little Formula states that the nth term of a sequence or ...
Write a formula for the nth term of the sequence (1,−18,127,...), assuming the pattern continues.nth Term of a Sequence:To identify the pattern of the given expression, we try to rewrite the succeeding terms in terms of the initial term. For ins...
Find a formula for the nth term of the sequence in terms of {eq}n {/eq}. {eq}\displaystyle \frac 16, \frac 59, \frac {5^2}{12}, \frac {5^3}{15}, \frac {5^4}{18}, \cdots {/eq} Arithmetic and Geometric Progression...
Nth Term of Arithmetic ProgressionThe formula an = a + ( n – 1 ) d is used to get the general term (or) nth term of an arithmetic progression (AP) whose first term is a, and the common difference is d. For example, we have the sequence 5, 8, 11, 14, 17, 20, 23, and ...
The sequence's general term or nth term is calculated using the formula, an=a1+(n-1) d where a1 is the first term, d is a common difference, n is the term position, and an is the nth term of the sequence. What is the formula for the common difference? The common difference for...
Learn to define what an arithmetic sequence is and discover the arithmetic sequence formula. Learn to find the nth term and sum of arithmetic...
Let a1be the first term Let n be the number of terms Let anbe the nth term. Then, an= d × (n - 1) + a1 A couple of exercises about arithmetic sequences Are the given sequences arithmetic? If so, find the 98th term.
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