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1  | 如圖甲乙丙三角形 甲乙等縱線為時乙丙等橫線為速十秒內所過之路即為甲乙丙三角形 積 |
| 2 | 有物下墜數秒 而末秒之路為全路三分之一試求其秒數 |
| 3 | 時永清 |
| 4 | 答曰七秒又 一七八二 |
| 5 | 二方根為一四一四 二三方根為一六四三 一兩根較為二二八九乃有比例 |
| 6 | 一率 兩根較 二二 八九 |
| 7 | 二率 三方根一六四三一 |
| 8 | 三率 一秒 |
| 9 | 四率 七秒又一七八二 |
URN: ctp:ws219255
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