cardioid
(geometry) An epicycloid with exactly one cusp; the plane curve with polar equation 𝜌=1+ cos ,𝜃 - approximately heart-shaped
(organic chemistry) Any trifluoro derivative of an ethyl radical, but especially CF₃CH₂-
simple past tense and past participle of outsnap
plural of monkey boot
固定された円の周りを円が転がるときに現れる、ちょうど一つの尖点を持つエピサイクロイドは、学生がこの種の曲線がどのように生成されるかを視覚的に理解するのに役立つ。
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