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第487章 数学提高班(2 / 2)

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“我曾经在户部有幸聆听过过官家讲解这立天元一的方程,官家当时说,将来科举这是必考之题。当时的题目我记忆深刻,其实和九章中的解法类似,只不过官家的书写方法更为简便。”

本小章还未完,请点击下一页继续阅读后面精彩内容!“啊……”整个茶楼中一片哗然,其中也不乏暗自窃喜之人。

宓峥好像根本不理会众人的反应,一边说一边在纸上写着:

“匠做坊将成本为三百钱的铁锅以四百钱售出,平均每月能售出六百个。调查表明:这种铁锅的售价每上涨十钱,其销售量就将减少十个。若是要平均每月十万钱盈利,这铁锅该售价几何,每月又该生产几许?”

茶楼中有人高声叫道:“定价五百钱,每月造五百只足矣。”

有人接着说道:“八百钱一口,每月造两百只足矣。”

写完题目的宓峥转过身来笑了笑,朗声说道:“这数字靠猜也能猜到,可考试之时需要你列出算术过程,靠猜填写的数字是无用的。你们要仔细研读一下《新编九章》,用其中的代数天地人三元去解答(相当于XYZ),若用书上官家发明的运算符号,更可事半功倍。”

茶楼之中瞬间炸开了锅。

一元二次对于能看到此处的读者来说,那不过是很简单的东西,哪怕二元二次也是九年义务教育必备的技能。可对于当时这些对数学毫无兴趣的士子来说,就好比一个三年级学生一般,这哪里是算学,这是天书。

更何况此时的九章方程是纯文字描述形式的,用符号组成的现代算式在此刻还未出现。

宓峥讲到这里不讲了,拿了书卷径直走去了二楼。

茶楼中几乎所有的人都高呼着宓判官留步,可宓峥无动于衷脚步不停进了二楼的一间雅室。

“铛铛铛,静一静。”茶博士又再次出现,“诸位贤达,宓判官不过是碍于我家主人情面来此为各位讲解一番,可学识这东西也不可能一次便通晓大义的。宓判官和诸位非师非友,诸位如此强求怕是不妥吧?”

此话一出,茶楼中顿时安静了下来,这强求一个八品的判官教你算学的确是极为不妥的。

“不瞒各位,我先前还能听懂一二,可后来这立天元一的方程完全无门可入,这又是官家钦定必考之题,若是不能融会贯通,这十数年寒窗岂不是白忙一场!”

“是啊!若之奈何!”

“这新编九章官家亲授的便捷算符我虽能看懂可也不会运用。”

“十年寒窗难道就到此止步了!”

……

茶楼中乱成一片。

“铛铛铛。”茶博士又敲起了小铜锣,“诸位,本店有《内部参考》增印的《九章真题》,这些题型都是从礼部得来,涵盖了科举算术的所有题目。后面还附有答案和注解,若是……”

“休要罗唣!多少钱!”有人打断了茶博士的话头。

“嘿嘿,便宜得很。两个银钱一份。”

“来一份。”

“给我也来一份。”

“快些,给我两份。”

……

“铛铛铛,莫急莫急,人人都有。”茶博士一挥手,十来个五大三粗的汉子抱着个筐子开始售卖了起来。

“诸位贤达,若是对这方程有不解之处,可上楼上雅间。宓判官今日休沐便都在此处,定能为君答疑解惑。每人仅收一枚金钱,便可学得这天元为一的神术。”

众皆哑然。

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