How to Write a Direct Proof: The Sum of Even Integers is Even

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How to Write a Direct Proof: The Sum of Even Integers is Even

A basic proof but done very carefully.
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I will definitely use your channel when I start doing upper bachelor/ graduate level math! Also love the name, wizards are cool.

toastyarmor
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This video helps me alot! thank you! hopefully you make more videos related to this!

kingman
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proof:(1)Even integer X is defined as X=2k for some integer k.(2) In our given problem X and Y are even integers hence by applying definition of integer X then X=2k and Y=2n. X+Y=2k+2n=2(k+n)

juanlynching