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重难题组周练（1）——二次函数
Author:
程洁
Topic:
Quadratic Functions
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
判斷球體
第八周作业
找出對稱軸
美國國旗 (Claude 版)
Discover Resources
線之極點定理 / pole of a line theorem
正弦函數的遞增與遞減
對數函數
Projection01
sin(x) 的函數圖形的副本
Discover Topics
Rotation
Surface
Logic
LCM and GCD
Percentages