a. The N-th partial sum is the sum of the first N terms of the series. For example, the 2nd partial sum is S2 = + Calculate the first five partial sums for this series. Do you notice a pattern? b. Use your pattern from (a), or the finite geometric series formula, to find a formula (in terms of N) for the N-th partial sum of this series. SN =? c. Now consider the full infinite series. Does this series converge or diverge? Explain how you know. d. If the series converges, calculate the total sum.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
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Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Now we'll consider the infinite series: 2 3 + 4 9 + 8 27 + 16 81 + 32 243 + ⋯  
This is an example of a geometric series.

  1. The N-th partial sum is the sum of the first N terms of the series. For example, the 2nd partial sum is
    S 2 = 2 3 + 4 9 = 10 9 
    Calculate the first five partial sums for this series. Do you notice a pattern?
  2. Use your pattern from (a), or the finite geometric series formula, to find a formula (in terms of N) for the N-th partial sum of this series.
    S N = ? 
  3. Now consider the full infinite series. Does this series converge or diverge? Explain how you know.
  4. If the series converges, calculate the total sum.
16
2. Now we'll consider the infinite series: +*+
32
+..
243
This is an example of a geometric series.
a. The N-th partial sum is the sum of the first N terms of the series. For example, the 2nd partial sum is
S2
+
10
Calculate the first five partial sums for this series. Do you notice a pattern?
b. Use your pattern from (a), or the finite geometric series formula, to find a formula (in terms of N) for the N-th partial sum of this series.
SN =?
c. Now consider the full infinite series. Does this series converge or diverge? Explain how you know.
d. If the series converges, calculate the total sum.
Transcribed Image Text:16 2. Now we'll consider the infinite series: +*+ 32 +.. 243 This is an example of a geometric series. a. The N-th partial sum is the sum of the first N terms of the series. For example, the 2nd partial sum is S2 + 10 Calculate the first five partial sums for this series. Do you notice a pattern? b. Use your pattern from (a), or the finite geometric series formula, to find a formula (in terms of N) for the N-th partial sum of this series. SN =? c. Now consider the full infinite series. Does this series converge or diverge? Explain how you know. d. If the series converges, calculate the total sum.
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