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利用单位圆生成y=sin（x）在[0,2pi]的图象
Author:
孙琰
GeoGebra
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折扣
三角函数 的副本
异形操场
龙形曲线-分形龙2
中华人民共和国国旗
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奠基活動20141008
偏心的農夫?
周界平移
homework3
pic2-6一次函数的副本
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Trapezoid
Mathematics
Fractions
Tangent Line or Tangent
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