"If r is a non zero rational number then r square root of 2 is an irrational number." For each method below, state (a) what should be assumed, and (b) what should be shown in proving the implication. 1. Direct Proof 2. Indirect Proof 3. Proof of the Contrapositive

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.2: Mathematical Induction
Problem 49E: Show that if the statement is assumed to be true for , then it can be proved to be true for . Is...
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"If r is a non zero rational number then r square root of 2 is an irrational number."

For each method below, state (a) what should be assumed, and (b) what should be shown in proving the implication.

1. Direct Proof

2. Indirect Proof

3. Proof of the Contrapositive

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