Theorems (i), (iia), and (iib) can be used as justifications of a line of your proof. Let El=set of even integers and OI=set of odd integers. Theorem (i): If n is an integer, then neEI or neOI.
Theorems (i), (iia), and (iib) can be used as justifications of a line of your proof. Let El=set of even integers and OI=set of odd integers. Theorem (i): If n is an integer, then neEI or neOI.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Prove the following theorems. Strictly follow instructions as to
which method of proof will be used. Always write down what your assumptions are and what you need to show before your proof. You are allowed to directly use algebraic manipulations such as the use of special products, factoring, cross multiplication, transpose, substitution in your proof. Provide a justification for each line of your proof except those lines where you simply performed algebraic manipulations. State the theorem if the theorem has no name. You may also use the
theorems on the photo in your proof:
Transcribed Image Text:Theorems (i), (iia), and (iib) can be used as justifications of a line of your proof.
Let El=set of even integers and OI=set of odd integers.
Theorem (i): If n is an integer, then neEI or nɛOI.
Let n be any integer.
Theorem (iia): n e EI if and only if ngOI; or equivalently,
Theorem (iib): n e OI if and only if n¤EI.
Prove by direct method:
If k is an integer, then k(k+1) e EI.
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