关于九章算术翻译

来源:百度知道 编辑:UC知道 时间:2024/06/07 22:40:55
1.约分术
又有九十一分之四十九。问约之得几何?
答曰:十三分之七。
约分术曰:可半者半之,不可半者,副置分母子之数,以少减多,更相减损,求其等也。以等数约

2. 密率术
又有环田,中周六十二步、四分步之三,外周一百一十三步、二分步之一,径十二步、三分步之二。问为田几何?
答曰:四亩一百五十六步、四分步之一。
术曰:并中外周而半之,以径乘之为积步。
密率术曰:置中外周步数,分母、子各居其下。母互乘子,通全步,内分子。以中周减外周,余半之,以益中周。径亦通分内子,以乘周为实。分母相乘为法,除之为积步,余积步之分。以亩法除之,即亩数也。

3. 盈不足术
今有共买牛,七家共出一百九十,不足三百三十;九家共出二百七十,盈三十。问家数、牛价各几何?
答曰:一百二十六家,
牛价三千七百五十。
盈不足术曰:置所出率,盈、不足各居其下。令维乘所出率,并以为实。并盈、不足为法。实如法而一。有分者,通之。盈不足相与同其买物者,置所出率,以少减多,余,以约法、实。实为物价,法为人数。

3. 方程术
今有上禾三秉,中禾二秉,下禾一秉,实三十九斗;上禾二秉,中禾三秉,下禾一秉,实三十四斗;上禾一秉,中禾二秉,下禾三秉,实二十六斗。问上、中、下禾实一秉各几何?
答曰:
上禾一秉,九斗、四分斗之一,
中禾一秉,四斗、四分斗之一,
下禾一秉,二斗、四分斗之三。
方程术曰,置上禾三秉,中禾二秉,下禾一秉,实三十九斗,于右方。中、左禾列如右方。以右行上禾遍乘中行而以直除。又乘其次,亦以直除。然以中行中禾不尽者遍乘左行而以直除。左方下禾不尽者,上为法,下为实。实即下禾之实。求中禾,以法乘中行下实,而除下禾之实。余如中禾秉数而一,即中禾之实。求上禾亦以法乘右行下实,而除下禾、中禾之实。余如上禾秉数而一,即上禾之实。实皆如法,各得一斗。

4.少广术曰:置全步及分母子,以最下分母遍乘诸分子及全步,各以其母除其子,置之于左。命通分者,又以分母遍乘诸分子,及已通者皆通而同之,并之为法。置所求步数,以全步积

1. 约分 the technique also has 49/91. Asks approximately the
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2. 密率 techniques also have the link field, center Saturday
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