5.4.4 In this question we use recall an alternative definition of prime.19 Definition. p E N>2 is prime if Va, b E N, p|ab = p|a or p|b. Let p be prime, let n e N, and let a1,...,an be natural numbers such that p divides the product aja2·.. an. Prove by induction that, 3i e {1,2,...,n} such that p|a;.

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5.4.4 In this question we use recall an alternative definition of prime.19
Definition. p E N>2 is prime if Va, b E N, p|ab = p|a or p|b.
→ pla or p|b.
Let p be prime, let n E N, and let a1,...,an be natural numbers such that p divides the product
ajd2 · · · An. Prove by induction that,
3i e {1,2,...,n} such that p|a;.
Hint:
need to cover two base cases.
Why? Think about the induction step first and it will help you
you
decide how
таny
base cases you
need.
Transcribed Image Text:5.4.4 In this question we use recall an alternative definition of prime.19 Definition. p E N>2 is prime if Va, b E N, p|ab = p|a or p|b. → pla or p|b. Let p be prime, let n E N, and let a1,...,an be natural numbers such that p divides the product ajd2 · · · An. Prove by induction that, 3i e {1,2,...,n} such that p|a;. Hint: need to cover two base cases. Why? Think about the induction step first and it will help you you decide how таny base cases you need.
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