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直线倾斜角与斜率
Author:
郑飞宇
倾斜角的变化与斜率的变化关系
GeoGebra
New Resources
圓的切線方程
第八周作业
兩位數除以一位數（一）
【案例】2013年安徽高考15题
多邊形的面積
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Addition and Subtraction of Directed Numbers (2) 有向數加減(2)
軌跡,摺紙,滾動,實驗觀察,曲線
ibooks-函數的平移
冷氣機的銷量
Quiz on Special Lines in Triangles 三角形內的特殊線：測驗
根據百分率找數量（二）: 例4的副本
Discover Topics
Piecewise Functions
Orthocenter
Right Triangles
Percentages
Sequences and Series