指数乘法法则演示
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①本范例演示指数乘法法则的几何与代数表示;②核心概念为指数运算规则、函数图像变换;③构造中运用了Text, If, Translate, Sequence等命令及expX1, expY1等对象,实现条件文本与序列动画;④适合高中数学教学,用于理解指数函数性质与运算规则。
GeoGebra 命令及参数
Text("y") → text4Text("y") → text6Text("x") → text5Text(expX1 + "") → text8Text(expX2 + "") → text9Text(expY1 + "") → text10Text(expY2 + "") → text11If(color, 255, 0) → factorColor255If(color, 153, 0) → factorColor153Text("x") → text3If(expX1 - expX2 ≟ 0 ∧ expY1 - expY2 ≟ 0, 1, 0) → zerosTranslate((6.923609046978582, -1.782455570499752), Vector[(0, 0), (0, -3)]) → ATranslate((6.923609046978582, 0.217544429500248), Vector[(0, 0), (0, -3)]) → BTranslate((7.524258469913336, 0.217544429500248), Vector[(0, 0), (0, -3)]) → CTranslate((7.524258469913336, -1.782455570499752), Vector[(0, 0), (0, -3)]) → DSequence(Translate[xtop, Vector[(1.5, 0), ((0.65 * i), 0)]], i, 0, expX1 + expX2 - 1) → ExpandXtopSequence(Translate[ytop, Vector[(0, 0), ((0.65 * i), 0)]], i, 0, expY1 + expY2 - 1) → ExpandYtop