오일러 수에서 보았듯이, 입력 변수를 계속 증가하거나 감소할 때 출력 변수가 특정한 값에 계
속 근접하지만, 그 값에는 도달하지 못하면 몇 가지 흥미로운 아이디어가 떠오릅니다. 이 아이
디어를 수학적으로 살펴보죠. [그림
1
-
5
]에 나타난 함수
fx
x
()=
1
을 예로 들어보겠습니다.
그림
1-5
영원히
0
에 가까워지지만 결코
0
에 도달하지 않는 함수
42
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