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國八：因式分解-常見因式分解
Author:
賴尚欣
GeoGebra
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盈利與虧蝕
圓的切線方程
平行線的斜率
圓的基本性質
龙形曲线-分形龙2
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百分數（小學）：折扣 / 賺賠
圓,圓柱,圓錐,球
Archimedean spiral
erwtewt的副本
旋转的花瓣
Discover Topics
Ratios
Congruence
Upper and Lower Sum or Riemann Sum
Stochastic Process or Random Process
Rational Numbers