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Lissajous. animation courbe de Lissajous par Robert FERROL crateur du site mathcurve MathCurve avec son aimable autorisation fr Bloodylibu CommonsHelper JeanClaude Duss fr Robert Ferrol Original upload log page fr Lissajous JeanClaude Duss bytes no courbe de Lissajous Animated Lissajous curves Animated