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重难题组周练（1）——二次函数
Author:
程洁
Topic:
Quadratic Functions
GeoGebra
New Resources
兩位數加法
【案例】2013年安徽高考15题
球体的体积推导
異分母分數減法
兩組對邊相等和有直角的四邊形
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Reflectional Symmetry 反射對稱
幾何作圖動畫示範
GeoGebra使用指南
多項式函數及其圖形
表内乘法
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Inequalities
Exponential Functions
Equilateral Triangles
Isosceles Triangles
Prism