比例协变:实数乘法
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①本范例演示了比例协变从自然数扩展到实数的图形现象;②涉及核心数学概念包括乘法、分段函数、直方图、微积分、相关性和抛物线;③作图要点使用了Textfield, Max, Segment等GeoGebra命令和对象;④适合高中及以上数学学习者和教师用于理解乘法在实数域中的变化规律。
GeoGebra 命令及参数
Textfield(number_{multiplier}) → input_{multiplier}Textfield(number_{multiplicand}) → input_{multiplicand}Max({number_{multiplier}, (-number_{multiplier}), number_{multiplicand}, number_{multiplicand}, number_{product}, (-number_{product})}) → maxSegment(Unit, Multiplier) → s_1Segment(Multiplicand, Product) → PCVSegment((0, 0), Unit) → h_1Segment((0, 0), Multiplicand) → h_2Segment((0, 0), Multiplier) → h_3Segment((0, 0), Product) → h_4Textfield(number_{multiplier}) → MltplrTextfield(number_{multiplicand}) → MltplcndTextfield(number_{multiplier}) → input_2Textfield(number_{multiplicand}) → input_1Textfield(number_{multiplier}) → inputBox1_1Textfield(number_{multiplicand}) → inputBox2_1Textfield(number_{multiplier}) → input_5Textfield(number_{multiplicand}) → input_3Textfield(number_{multiplier}) → inputBox1_2Textfield(number_{multiplicand}) → inputBox2_2Textfield(number_{multiplier}) → input_6Textfield(number_{multiplicand}) → input_4Textfield(number_{multiplier}) → inputBox1_3Textfield(number_{multiplicand}) → inputBox2_3Textfield(number_{multiplier}) → input_9Textfield(number_{multiplicand}) → input_7Textfield(number_{multiplier}) → inputBox1_4Textfield(number_{multiplicand}) → inputBox2_4Textfield(number_{multiplier}) → input_{10}Textfield(number_{multiplicand}) → input_8Textfield(number_{multiplier}) → inputBox1_5Textfield(number_{multiplicand}) → inputBox2_5
AI 绘图提示语参考
画一个展示实数乘法比例变化的图形,包含两个输入框分别代表乘数和被乘数,通过计算它们的乘积并绘制四个从原点到各数值的线段,再连接乘数和乘积、被乘数和乘积绘制两条线段,最后用最大值函数确定关键点位置,整体展示乘法在实数中的变化关系。
以上提示语为根据原始绘图命令整理而来,仅供参考。