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函数与不等式比较互动示例

函数与不等式比较互动示例
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2015-12-06 21:29
函数不等式函数图像
本示例展示了如何通过互动活动比较用户输入的函数和不等式。核心数学概念包括函数和不等式。使用了If条件语句、随机数生成、简化表达式、文本输入框等GeoGebra命令。适合学生和教师设计互动教学活动。

GeoGebra 命令及参数

  1. If(useranswerincludecentrepoint, If[useranswergreaterthan, 4, 3], If[useranswergreaterthan, 2, 1]) → useranswerInequalitySymbolListIndexNum
  2. Random(-4, 5) → systemgeneratedInequalitycentrepoint
  3. Random(1, 4) → systemInequalityGeneratedListIndexNum
  4. Simplify((Random[-2, 3] * x)) → systemgeneratedFunction
  5. If(useranswerFunction(999) ≟ systemgeneratedFunction(999) ∧ useranswerFunction(-9999) ≟ systemgeneratedFunction(-9999), true, false) → checkcorrectFunction
  6. Textfield(useranswerFunction) → InputBox1
  7. Textfield(systemgeneratedFunction) → InputBox2
  8. If(systemgeneratedInequalitycentrepoint ≟ useranswerInequalitycentrepoint ∧ systemInequalityGeneratedListIndexNum ≟ useranswerInequalitySymbolListIndexNum, true, false) → checkcorrectInequality
  9. Element(InequalityGeneratedList, systemInequalityGeneratedListIndexNum) → systemgeneratedInequality
  10. Textfield(useranswerInequality) → InputBox3