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过圆上一点作切线,三步
Author:
u.jianwang
GeoGebra
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折扣
GeoGebra数学资源(4-8年级)
异形操场
盈利與虧蝕
第三周作业效果演示
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在三角形兩個邊各取一點使得三線段等長(BK=KL=CL)
減法
Slope 斜率 - 概念及定義 (3)的副本
旁心
基本不等式
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Calculus
Conditional Probability
Sequences and Series
Diagrams
Intersection