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三角函数的副本
Author:
haixiang xu
,
邓粤海
GeoGebra
New Resources
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
球体的体积推导（优化版）
Discover Resources
正立方體與平面的截面
hjzx123456
拋物線6--包絡線法
二次函数与三角函数
somacube
Discover Topics
Hypergeometric Distribution
Logarithm
Derivative
Isosceles Triangles
Fractal Geometry