Prove that if n is a positive integer, then .Jii is rational iff n is a perfect square
Chapter 13, Problem 13.19(choose chapter or problem)
Prove that if n is a positive integer, then .Jii is rational iff n is a perfect square (see 13.18). (Suggestion: Apply the Fundamental Theorem of Arithmetic to a2 = nb2 CompareTheorem 31.1.)
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