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C.48
Author:
石井翔太
2<x<4の範囲で異なる2つの実数解をもつ ⇔判別式D>0 かつ 2<軸<4 かつ f(2)>0,f(4)>0
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直線の軌跡
standingwave-reflection-free
standingwave
目で見る立方体の2等分
standingwave-reflection
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ベン図による集合の可視化(試作品)
M901
三角形の極線の極線の秘密
二次曲線の曲率
直線の式の求め方
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Combinatorics
Piecewise Functions
General Quadrilateral
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