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3=sqrt(9)=sqrt(1+2×4)=sqrt(1+2×sqrt(16))=sqrt(1+2×sqrt(1+3×5))=sqrt(1+2×sqrt(1+3×sqrt(25)))=sqrt(1+2×sqrt(1+3×sqrt(1+24)))=sqrt(1+2×sqrt(1+3×sqrt(1+4×6)))=sqrt(1+2×sqrt(1+3×sqrt(1+4×sqrt(36))))=...=sqrt(1+2×sqrt(1+3×sqrt(1+4×sqrt(...)))) 처럼 생각하면 답은 3입니다!

  ·  6 years ago (edited)

ㅎㅎ 맞습니다! 정말 오랜만에 뵙는군요!! 그동안 잘 지내셨나요! ㅎㅎ

이거 정답이 뭔가요??궁금해요ㅠ

@yey 님이 댓글을 달아주셨습니다. 좀 더 일반화된 식을 방금 올렸습니다.