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給定任三條互不平行直線, 有幾個拋物線和此三直線相切!
Author:
YiLongYen
GeoGebra
New Resources
圓周公式的應用
平行線的斜率
球体的体积推导(优化版)
【案例】圆柱体内放置一个大球六个小球
漂亮的摇摆曲线
Discover Resources
根據百分率找數量(二): 例2
test1
四年級_四邊形
QQ空间
函数作图工具的副本
Discover Topics
Matrices
Linear Equations
Conic Sections
Conditional Probability
Tangent Function