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Function and Inequality Comparison Interactive Example

Function and Inequality Comparison Interactive Example
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2015-12-06 21:29
FunctionInequalityGraphing
This example demonstrates how to compare user-input functions and inequalities through an interactive activity. Key mathematical concepts include functions and inequalities. GeoGebra commands used include If, Random, Simplify, Textfield, etc. Suitable for teachers and students to design interactive teaching activities.

GeoGebra Commands & Parameters

  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