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Scope: Hai Dao Suan Jing Request type: Paragraph |
Condition 1: Contains text "又術列望水上下股及望石上下股相減餘幷為法" Matched:1. |
Total 1 paragraphs. Page 1 of 1. |
《海島算經 - Hai Dao Suan Jing》 | [Three Kingdoms] 263 | Books referencing 《海島算經》 Related resources |
7 | 海島算經: | 今有望清淵,淵下有白石。偃矩岸上,令句高三尺。斜望水岸,入下股四尺五寸。望白石,入下股二尺四寸。又設重矩于上,其間相去四尺。更從句端斜望水岸,入上股四尺。以望白石,入上股二尺二寸。問水深幾何? |
答曰:一丈二尺。 | ||
術曰:置望水上下股相減,餘以乘望石上股為上率。又以望石上下股相減,餘以乘望水上股為下率。兩率相減,餘以乘矩間為實;以二差相乘為法。實如法而一,得水深。 | ||
又術:列望水上下股及望石上下股,相減,餘幷為法。以望石下股減望水下股,餘以乘矩間為實,實如法而一,得水深。 |
Total 1 paragraphs. Page 1 of 1. |
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