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创建线性方程组解决实际问题

创建线性方程组解决实际问题
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2019-04-27 01:13
函数解析几何
本范例演示如何通过创建线性方程组来解决实际问题。核心数学概念包括线性方程。主要使用了Element, Length, Join, Zip, Sequence等GeoGebra命令。适合初中及以上学生或教师使用。

GeoGebra 命令及参数

  1. Element(questionList, questionListIndex) → questionNum
  2. Element(A2:A4, questionNum) → questionText
  3. LaTeX((((("\text{" * QUESTION) * "\\") * INSTRUCTIONS) * "}")) → TEXT
  4. Length(B2) → C2
  5. Join({Sequence[(i, firstPointY), i, firstPointX, firstPointX + 36, 6], Sequence[(i, firstPointY + 3), i, firstPointX + 3, firstPointX + 36, 6]}) → pointList
  6. Zip(Circle[A, 1.6], A, pointList) → circleList
  7. Element(B2:B4, questionNum) → itemListVals
  8. Element(circleList, 1) → circle1
  9. Element(circleList, 2) → circle2
  10. Element(circleList, 3) → circle3
  11. Element(circleList, 4) → circle4
  12. Element(circleList, 5) → circle5
  13. Element(circleList, 6) → circle6
  14. Element(circleList, 7) → circle7
  15. Element(circleList, 8) → circle8
  16. Element(circleList, 9) → circle9
  17. Element(circleList, 10) → circle10
  18. Element(circleList, 11) → circle11
  19. Length(B3) → C3
  20. Length(B4) → C4
  21. Element(D2:D4, questionNum) → correctEquation1
  22. Element(E2:E4, questionNum) → correctEquation2
  23. Element(circleList, 12) → circle12
  24. Element(circleList, 13) → circle13
  25. Sequence(Text[TableText[{{Element[itemListVals, Element[itemListOrder, i]], "\hphantom{00.00}"}}, "vc"], Element[pointList, i] + (-2.1, 0.9), false, true], i, 1, 13) → circleContents