Learn what an arithmetic sequence is and explore different examples of an arithmetic sequence. Understand how to find the sum of an arithmetic...
How to Find and Classify an Arithmetic Sequence 9:09 General Term of an Arithmetic Sequence | Overview, Formula & Uses 5:01 Sum of Arithmetic Sequence | Formula & Examples 6:00 Recursive Rule | Formulas & Examples 5:52 How to Write a Series in Summation Notation | Overview & Exampl...
An arithmetic series is the sum of the terms of an arithmetic sequence. 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....
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+...
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...
Fibonacci series is a sum of terms where every term is the sum of the preceding two terms, starting from 0 and 1 as the first and second terms. In some old references, the term '0' might be excluded. Understand the Fibonacci series using its formula and
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...
An arithmetic sequence is a sequence where each term is found by adding or subtracting the same value from one term to the next. This value that is added or subtracted is called "common sum" or "common difference" If the common difference is positive, the terms of the sequence will increa...
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:
Another formula to calculate the sum of first n odd numbers is Sn= n2. But to use this formula, the starting odd number should always be 1. How to find Sum of Odd Numbers? The sum of odd numbers can be calculated using the formula Sn= n/2 × [a + l] where 'a' is the first...