作者Honor1984 (奈何上天造化弄人?)
看板Math
标题Re: [中学] 请问这题数学如何解?
时间Sun Apr 16 13:32:30 2023
※ 引述《flysaksak (梦)》之铭言:
: En. Safi feeds his cat 3 times a day. The first feeding time at 6:15 a.m. At what time should be feed his cat for the third feeding?
: 答案是h^2+12h+30
: 请问如何解?
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: Sent from JPTT on my iPad
h是什麽东东?题目根本没有这个符号
一天三次,
假如是等间隔(不太真实),
间隔就是24/3 = 8小时
6:15 + 8:00 + 8:00
= 22:15
晚上10点15分是第三次喂食
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