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Ex_67
Author:
早苗雅史
GeoGebra
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平均変化率
二次曲線と離心率
円の伸開線
standingwave-reflection-free
斜めドップラー
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楕円の縮閉線
内心の等距離共役点
等角変形O
半平坦倒し(前半)
極線と楕円と外接四角形（極を通る）
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Means
Combinatorics
Frequency Distribution
Fractions
Difference and Slope