수학동아 - 폴리매스

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함께 풀고 싶은 문제

나도 수학쌤 문장제 문제를 변형해 문제를 내는 곳입니다.

[문장제 문제&개념응용] [미분][적분]기름값은 얼마?

매스파이 2020.06.06 22:53 조회 743

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

자동차와 언덕이 있다. 언덕의 모양을 나타내는 그래프는 $y=x^{2}$ 이고 이 자동차의 연비는 20km/L이고, 자동차의 x좌푯값은 0이다.언덕 정상의 x좌표값은 20이다. 언덕 정상까지 올라가는데 최소로 필요한 기름값은 총 몇 원인가? (단 기름값 단가는 1L당 1500원으로 생각하고, 그래프 상에서의 1은 1m이라고 하자.)

이전글 간단한 수학문제 v11[물리][대수]

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원파 Lv.9 2020.06.07 08:35

y=x^2이면 아래로 볼록한 그래프니까 언덕이라고 할 수 없을 것 같습니다.

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