1. • If r + 1| < o, prove that |r³ + 1| < 0.331.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 54E
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• If r + 1| < b, prove that |r³ + 1| < 0.331.
• If |r + 1| < 6, prove |r³ + 1| < 76
1.
Transcribed Image Text:• If r + 1| < b, prove that |r³ + 1| < 0.331. • If |r + 1| < 6, prove |r³ + 1| < 76 1.
Expert Solution
Step 1

Here we use the fact 

| x |< a implies 

-a< x < a .

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