The formula for the sum of the first nn terms of an arithmetic sequence is Sn=n(a1+an)2Sn=n(a1+an)2 How To: Given terms of an arithmetic series, find the sum of the first nn terms. Identify a1a1 and anan. Determine nn. Substitute values for a1, ana1, an, and nn into the ...
The recursive formula for an arithmetic sequence is:\(a_1=-8a_n=a_(n-1)+3.What is the 3rd term in the sequence?OA.-5O B. -14OC.-24O D.-2 相关知识点: 试题来源: 解析 a_1=-8 a_n=a_(n-1)+3 n=2then a_2=a_2+3 =a_1+3 =—8+3 a2=—5 n-3 then a_3=a_2+...
Complete the recursive formula of the arithmetic sequence 4, 22,40,58,...$$ b ( 1 ) = 7 6 $$$ b ( n ) = b ( n - 1 ) + \boxed { I } $$ 相关知识点: 试题来源: 解析 4,22,40,58 so, finir term of the squence $$ b(1)=4(Ans) $$ and common difference $$ =(22-...
We define an arithmetic sequence as a sequence which has a common difference between all consecutive terms. This sequence is very useful in simulating certain scenarios in which there is a common difference.Answer and Explanation: The general formula for the arithmetic sequence is An=A1+(n−1)...
Answer to: The arithmetic sequence a_i is defined by the formula: a_1 = -4910 \\a_i = a_{i-1} + 8 Find the sum of the first 575 terms in the...
For the given arithmetic sequence, write an explicit formula for f(n). Assume the initial value ofn to be1. [Show all work.]3−c,4,5+c,6+2c,... 相关知识点: 试题来源: 解析 f(n)=2(1−c)+n(1+c)WORK SHOWN:a=3−c,d=4−(3−c)=1+c, f(n)=a+(n−1)d, f...
The sum formula of the first n terms of an arithmetic sequence is Sn = n(a1 + an)/2. If in an arithmetic sequence, a1 = 1, an = 19, n = 10, then Sn is equal to _. A. 100 B. 110 C. 120 D. 130 相关知识点:
The answer, it turns out, is 144 — and the formula used to get to that answer is what's now known as the Fibonacci sequence. Read more:9 equations that changed the world "Liber Abaci" first introduced the sequence to the Western world. But after a few scant paragraphs on breeding rab...
Using the Formula for Geometric SeriesJust as the sum of the terms of an arithmetic sequence is called an arithmetic series, the sum of the terms in a geometric sequence is called a geometric series. Recall that a geometric sequence is a sequence in which the ratio of any two consecutive ...
arithmetic progression n (Mathematics) a sequence of numbers or quantities, each term of which differs from the succeeding term by a constant amount, such as 3,6,9,12. Comparegeometric progression Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers...