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3.1 习题3.1(P115第8题 轨迹 椭圆第二定义）
Author:
张中强
选修 3.1 习题3.1(P115第8题 轨迹 椭圆第二定义）
GeoGebra
New Resources
拼砌四邊形
Earth with coastline
判斷球體
畫出對稱圖形
近似值：有效數字
Discover Resources
Direct Variation (Different powers of x)
兩位小數
軌跡觀察---圓上正三角形中心軌跡
解聯立方程
gjc096a19 平行四邊形內截兩扇形
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Angles
Circumcircle or Circumscribed Circle
Piecewise Functions
Linear Regression
Sequences and Series