피보나치 수열은 다음과 같이 주어진다.
F(n+2)=F(n+1)+F(n), F(1)=1, F(2)=1
이 때, 물음에 답하시오.
(1) 피보나치 수열의 일반항을 구하고 증명하여라.
(2) n이 무한대로 커질 때 F(n+1)/F(n)의 값을 구하여라
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