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Chapter 12: Q 48. (page 825)

For Problems 45鈥�50, use a graphing utility to find the sum of each geometric sequence.

鈭�n=1154路3n-1

Short Answer

Expert verified

The sum of the given sequence is28697812

Step by step solution

01

Step 1. Write the given information.

The given sequence is鈭�n=1154路3n-1

02

Step 2. Find the sum.

a1=4,r=3,n=15

The formula for the sum of nth term is sn=a1(rn-1)r-1

s15=4(315-1)3-1=4(315-1)2=2路(315-1)=28697812

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