Exercise 8. Interpret Archimedes´ two inequality statements as algebraic inequalities involving E=1i (this may involve some reindexing), and prove these algebraically from your closed formula for Σi

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.6: Inequalities
Problem 80E
Question
### Exercise 8

#### Problem Statement:
Interpret Archimedes’ two inequality statements as algebraic inequalities involving \( \sum_{i=1}^{n} i \) (this may involve some reindexing), and prove these algebraically from your closed formula for \( \sum_{i=1}^{n} i \).

#### Instructions:
1. **Analyze Archimedes' Inequalities**:
   - Carefully examine the two inequality statements attributed to Archimedes.
   - Reinterpret these statements in the context of algebraic inequalities. Focus specifically on those involving the summation \( \sum_{i=1}^{n} i \).

2. **Reindexing**:
   - Note that reindexing might be necessary to align the inequalities properly with the summation notation.
   - Adjust the indices as needed to fit the standard summation formula format.

3. **Closed Formula**:
   - Utilize the closed formula for the summation \( \sum_{i=1}^{n} i \), which is given by:
     \[
     \sum_{i=1}^{n} i = \frac{n(n + 1)}{2}
     \]
   - Apply this formula to express the inequalities algebraically.

4. **Proving the Inequalities**:
   - Transform the inequalities into a format that can be analyzed algebraically.
   - Prove these inequalities step-by-step using algebraic manipulations and the closed formula for the summation.

#### Goal:
The objective of this exercise is to strengthen your understanding of Archimedes' contributions to inequalities and improvement in handling algebraic summations and manipulations. By the end of this exercise, you should be able to frame his inequalities in modern algebraic terms and prove them using summation formulas.

Make sure to document your steps clearly and provide justifications for each part of the process.
Transcribed Image Text:### Exercise 8 #### Problem Statement: Interpret Archimedes’ two inequality statements as algebraic inequalities involving \( \sum_{i=1}^{n} i \) (this may involve some reindexing), and prove these algebraically from your closed formula for \( \sum_{i=1}^{n} i \). #### Instructions: 1. **Analyze Archimedes' Inequalities**: - Carefully examine the two inequality statements attributed to Archimedes. - Reinterpret these statements in the context of algebraic inequalities. Focus specifically on those involving the summation \( \sum_{i=1}^{n} i \). 2. **Reindexing**: - Note that reindexing might be necessary to align the inequalities properly with the summation notation. - Adjust the indices as needed to fit the standard summation formula format. 3. **Closed Formula**: - Utilize the closed formula for the summation \( \sum_{i=1}^{n} i \), which is given by: \[ \sum_{i=1}^{n} i = \frac{n(n + 1)}{2} \] - Apply this formula to express the inequalities algebraically. 4. **Proving the Inequalities**: - Transform the inequalities into a format that can be analyzed algebraically. - Prove these inequalities step-by-step using algebraic manipulations and the closed formula for the summation. #### Goal: The objective of this exercise is to strengthen your understanding of Archimedes' contributions to inequalities and improvement in handling algebraic summations and manipulations. By the end of this exercise, you should be able to frame his inequalities in modern algebraic terms and prove them using summation formulas. Make sure to document your steps clearly and provide justifications for each part of the process.
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ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage