放射性衰变演示
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①本范例演示了多种放射性同位素的衰变过程;②涉及核心数学概念包括指数函数、泊松分布和几何作图;③构造要点使用了 GeoGebra 命令如 Function(函数)、OrthogonalLine(垂线)、Intersect(交点)、Segment(线段)以及对象如滑块 Slider 和轨迹 Locus;④适合高中及以上学生或用于概率统计和微积分教学。
GeoGebra 命令及参数
Function(f1, 0, t / a) → f1zOrthogonalLine(Hp, yAxis) → g_1Intersect(f1, g_1, (55.59998175614492, 0.5000000000001242)) → Hp_1OrthogonalLine(Hp_2, yAxis) → g_2Intersect(f1, g_2, (111.1999635123297, 0.25)) → Hp_3OrthogonalLine(Hp_4, yAxis) → g_3Intersect(f1, g_3, (166.79994526849458, 0.12499999999999997)) → Hp_5OrthogonalLine(Hp_6, yAxis) → g_4Intersect(f1, g_4, (693.1471805599454, 0.06249999999999998)) → Hp_7Segment(Hp, Pr1h) → f1horSegment(Pr1h, Hp1u) → f1verSegment(Hp_2, Pr2h) → f2horSegment(Pr2h, Hp3u) → f2verSegment(Pr4h, Hp7u) → f4verSegment(Hp5u, Pr3h) → f3verSegment(Hp_4, Pr3h) → f3horSegment(Hp_6, Pr4h) → f4hor