College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.5: Mathematical Induction
Problem 42E
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Answer the following question accordingly:
Answer the following question:
Claim: all natural numbers are either even or odd
Proof: By induction. Base case: 0 is even, since 0=2*0
Now suppose that n-1 is either even or odd, and we must
show that n is either even or odd
Case 1: If n-1 is even, then n-1=2k for some k, so n=2k+1,
showing n must be odd
Case 2: If n-1 is odd, then n-1=2k+1 for some k, so
n=2k+2=2(k+1), showing n must be even
Is this proof correct? (ANSWER YES OR NO ONLY)
Transcribed Image Text:Answer the following question: Claim: all natural numbers are either even or odd Proof: By induction. Base case: 0 is even, since 0=2*0 Now suppose that n-1 is either even or odd, and we must show that n is either even or odd Case 1: If n-1 is even, then n-1=2k for some k, so n=2k+1, showing n must be odd Case 2: If n-1 is odd, then n-1=2k+1 for some k, so n=2k+2=2(k+1), showing n must be even Is this proof correct? (ANSWER YES OR NO ONLY)
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