anonymous
  • anonymous
how do i show, a is an integer 1) a|0? 2)0|a?
Discrete Math
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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zzr0ck3r
  • zzr0ck3r
does 0 divide anything?
anonymous
  • anonymous
no.
zzr0ck3r
  • zzr0ck3r
but I don't see how either show a is an integer, maybe i'm missing something.

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anonymous
  • anonymous
a is an integer is a condition. i just need to prove it or sth. my textbook is very subtle about requiring wat form of proof.
zzr0ck3r
  • zzr0ck3r
a is an integer if it can be generated by <1>
zzr0ck3r
  • zzr0ck3r
you are saying a is an integer and you need to prove a|0 and 0|a?
anonymous
  • anonymous
yeah. or show, as the textbook puts it.
zzr0ck3r
  • zzr0ck3r
well part 1 makes no sense because 0 is in integer and 0 does not divide 0, and the second part makes no sense because nothing divides 0. So you can't prove either.
anonymous
  • anonymous
ah well. thanks anyway.
zzr0ck3r
  • zzr0ck3r
is this exactly as the book shows the question?
anonymous
  • anonymous
yeah.
zzr0ck3r
  • zzr0ck3r
you can say, if a is an integer and a is not 0, then 0=K*a when k=0, so a|0 because k is an integer (by definition of a|b), for part two nothing divides 0 is your counterexample:)
anonymous
  • anonymous
wow. right. thanks.

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