第8章(第2页)
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讲完这道题,我不禁想要跑题,和宝子们聊一聊沈括这个人物,真的级可惜,抛开政治和人品道德上的争议不谈,他在科学上真的是巨人。
数学上他提出了隙积术和会圆术[2],其中这个隙积术,光听名字有的宝子可能不知道,但是我一说相关题目,考编人关于数学|运算的痛苦记忆就要浮现了。
问:有一些酒杯要进行层层叠放,每一层都是长方形,底层是1o乘以5,从下往上每层的长宽各递减一个,求问一共有多少个酒杯?
这就是隙积术!】
弹幕:啊啊啊!你不要再说了啦!
弹幕:沈括你罪大恶极!还好我根本来不及做数学|运算。[狗头]
弹幕:所以是多少个?
李世民:这题要记下来,不止要学《算经十书》,还要让学子们钻研。北宋的沈括能提出隙积术,我大唐的学子亦可啊!
康熙颇感兴趣地拿起御笔,开始演算。
唯有沈括,对于天幕的话若有所思:我为官如何了?人品道德又如何了?为何要抛开不谈?
【你以为我要说用ab、(a-1)(b-1)、(a-2)(b-2)这样一个个分层算,然后最后相加吗?
对,我就是这么算的,隙积术那个公式我记不住。
第一层1o*5=5o个,第二层9*4=36个,第三层8*3=24个,第四层7*2=14个,第五层6*1=6个。
所以一共是5o+36+24+14+6=13o个酒杯。
哈哈哈哈哈哈!其实我记忆中好像是有什么简单的公式的,就那个s=1的平方+2的平方+3的平方+……+n的平方,有平方的,应该也就会有长方形的吧?
但是我没记住啊!
哈哈哈哈哈!】
沈括:什、什么?
刘彻:天幕在说什么?朕除了酒杯,怎么都听不懂?
李世民:这就是后世的科举题目吗!
朱元璋:……
康熙:南怀仁呢?那个ab就是他说过的“元”
吗?
【我感觉我就是在自取其辱!
不讲了不讲了,跳过沈括在天文、物理、化学、地理等等方面的成就,最后再提一嘴,现在月球上有一个地名,就是用沈括来命名的哦!
我们来复盘下一题。
嗯?】
何夏夏用来直播的手机响了一声,她探头一看,是一条短信。
原来今天是中国航天日!
哇!
这不就赶巧了吗!
【宝子们,刚刚收到一条运营商的系统短信,告诉我今天,4月24日是中国航天日哦!今年的主题是“格物致知,叩问苍穹”
![6]
记下来,有可能会考。】
弹幕:涨知识了!
沈括:四月二十四日?似乎与现今的历法不同。但是,好一个叩问苍穹!
【好了,接下来我们看下一题,是文学知识。
2oo8年奥运会开幕式上,节目《活字印刷》呈现了汉字“和”
🎁性感美女在线做请退出浏览器阅读模式,否则将导致章节内容缺失及无法阅读下一章。
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