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'2017/04/19'에 해당되는 글 1건

Problems and Solutions #025
Problem #025 임의의 실수 $a$에 대하여 $\lfloor a \rfloor$를 $a$보다 작거나 같은 가장 큰 정수, $\{a\}$를 $a$의 소수부분, 즉, $\{a\} = a - \lfloor a \rfloor$와 같이 정의하자. 예를 들어 $a = 2.3$이라면 $\lfloor a \rfloor = 2$, $\{a\} = 0.3$이고, $a = -1.4$인 경우 $\lfloor a \rfloor = -2$, $\{a\} = 0.6$을 얻는다.이 때, 아래의 연립방정식을 풀어라. \begin{align*} x + \lfloor y \rfloor + \{z\} &= 3.8 \\ y + \lfloor z \rfloor + \{x\} &= -1.7 \\ z + \lfloor x \rfloor +..
Others/Middle School Math  |  2017. 4. 19. 08:51
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