Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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The following “Theorem” is obviously not true. Explain what’s wrong with the proof.

Theorem: 1 is the largest natural number.

Proof: The proof is by contradiction. Let n be the largest natural number and suppose that n > 1. Multiplying both sides of this inequality by n we see that n2 > n. Thus, n2 is a natural number greater than n, contradicting the fact that n is the largest natural number. So, the assumption n > 1 is wrong, and therefore n = 1. So, 1 is the largest natural number. 

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Step 1

Given Data:

Given Theorem is : 1 is the largest natural number.

This theorem is not true.

We have to explain the proof of this theorem correctly.

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