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直线与圆相切
Author:
蔡永志
直线与圆相切
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
判斷球體
兩組對邊相等的四邊形
球体的体积推导
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多項式函數
Proof1 楊玉峰
圖形的繪製(8)---圖形的搬移(畢氏定理)
圓形
夹逼法确定无理数根号2的范围
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LCM and GCD
Random Variables
Sequences and Series
Terms
Means