3,9, 27, 81, ... Find the sum of the first 5 terms.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 25RE: Use the formula for the sum of the first nterms of a geometric series to find S9 , for the series...
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Find the sum of the first  5 terms

A 10, Use the series formula to find the sum of the geometric sequence.
3,9,27, 81, ... Find the sum of the first 5 terms.
567
O363
O 243
496
H L 11. Use the recursive formula to find the term of the geometric sequence.
1,4,16,64,.. Find the 6th term.
O O
Transcribed Image Text:A 10, Use the series formula to find the sum of the geometric sequence. 3,9,27, 81, ... Find the sum of the first 5 terms. 567 O363 O 243 496 H L 11. Use the recursive formula to find the term of the geometric sequence. 1,4,16,64,.. Find the 6th term. O O
Expert Solution
Step 1

 

 

 

Sum of n terms of geometric sequence =arn-1r-1 for r>1

     where a is  first term  

                 r is the common ratio

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