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正弦型函数的图像变换
Author:
王新岩
GeoGebra
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異分母分數減法
画直线等分三角形的面积
第八周作业
兩位數除以一位數（二）
判斷球體
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Yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
初心者的進化
假的龍珠
纏繞圖
祖冲之的期望：内棋与外棋
Discover Topics
Constructions
Interest Calculation
Combinatorics
Trigonometric Functions
Algebra