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定积分的概念
Author:
Zhang Guangmin
GeoGebra
New Resources
兩組對邊相等的四邊形
判斷球體
球体的体积推导（优化版）
拼砌四邊形
【案例】2018年全国1卷理科12题
Discover Resources
三角形全等的理由 – 題2
Torus
冷氣機的銷量
如何求弦長
切割正二十面體
Discover Topics
Poisson Distribution
Differential Calculus
Tangent Function
Equilateral Triangles
Real Numbers