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折拋物線
Author:
Wu Xiao-Ren
Topic:
Parabola
操作說明：
1. 拖曳A點，則切線s可以包絡出拋物線(所有切點的軌跡)
GeoGebra
New Resources
兩位數加法
四邊形的特性
錐體建築師
球體建築師
兩組對邊相等的四邊形
Discover Resources
数轴上的整数加法
Geometric Circle
共垂心
圓錐(可改底面圓半徑、錐體高)
Angle of elevation and Angle of depression(仰角和俯角)
Discover Topics
Normal Distribution
Right Triangles
Stochastic Process or Random Process
Percentages
Complex Numbers