# Arithmetic Series - - Reiny

Consider the series defined by Sn = 3n-1

Find the first four terms of the series.

How exactly do I do this?

1. 👍 0
2. 👎 0
3. 👁 381
1. S1= 3*1 -1 = 2
S2 = 3*2 -1 = 5
S3 = 3*3 -1 = 8
etc.

1. 👍 0
2. 👎 0
2. keep increasing N

1. 👍 0
2. 👎 0

## Similar Questions

1. ### math

The sum of the first 5 terms of an arithmetic series is 70. The sum of the first 10 terms of this arithmetic series is 210. What is the first term of the series?

asked by James on August 14, 2019
2. ### Calculus

By recognizing each series below as a Taylor series evaluated at a particular value of x, find the sum of each convergent series. A) 1+5 + (5^2)/(2!)+(5^3)/(3!)+(5^4)/(4!)+...+ (5^k)/(k!)+...= B)

asked by Cole on June 18, 2013
3. ### math

in a geometric series t1=23,t3=92 and the sum of all of the terms of the series is 62 813. how many terms are in the series?

asked by cathy on January 12, 2014
4. ### Math

For the geometric series, S4/S8 = 1/17. Determine the first three terms of the series if the first term is 3.

asked by Tom on January 4, 2014
5. ### math B30

If the seventh term of a geometric series is 192, and the first term is 3, find the sum of the first 8 terms of the series

asked by alix on June 15, 2010
1. ### Math

The first two terms in a geometric series is 12. The sum of the first three terms of the same series is 62. Determine the first four terms of the series.

asked by Tom on January 8, 2014
2. ### math

The sum of the first 9 terms of an arithmetic series is 144, and the sum of the first 14 terms is 329. Find the first 4 terms of the series.

asked by Peter on January 23, 2017
3. ### Math

the sum of the first n terms of an arithmetic series is -51. the series has a constant difference of -1.5 and a first term of four. Find the number of terms in the sum I find using an EXCEL spreadsheet is very helpful for these

asked by BEANAGEE on December 21, 2006
4. ### Math question

In an arithmetic series, the 15th term is 43 and the sum of the first 15 terms is 120. Add the first 20 terms of the series.

asked by Anonymous on June 2, 2013
5. ### calculus

Consider ∞ ∑ [(3k+5)/(k²-2k)]ᵖ, for each p ∈ ℝ. k=3 Show this series { converges if p > 1 { diverges if p ≤ 1 Hint: Determine the known series whose terms past the second give an approximate match for the terms of

asked by Bernie on August 6, 2011
6. ### arithmetic

In an arithmetic series, the terms of the series are equally spread out. For example, in 1 + 5 + 9 + 13 + 17, consecutive terms are 4 apart. If the first term in an arithmetic series is 3, the last term is 136, and the sum is

asked by Cennie on September 24, 2010