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确定经过给定点的直线方程

确定经过给定点的直线方程
几何画板及绘图内容加载中，请稍等……
2019-02-05 23:03
函数解析几何几何作图
①本范例演示如何通过两个给定点绘制直线并确定其方程；②涉及的核心数学概念包括直线方程、解析几何、两点式；③构造过程中用到了Polygon、LaTeX、Element、Intersect、Textfield等GeoGebra命令和对象；④适合高中数学学生学习和练习解析几何知识。

GeoGebra 命令及参数

  1. Polygon({(-11, -11), (-11, 11), (11, 11), (11, -11)}) → viewBox
  2. LaTeX((((("\text{" * QUESTION) * "\\") * INSTRUCTIONS) * "}")) → TEXT
  3. Element(questionList, questionListIndex) → questionNum
  4. Intersect(B2, x = 0) → C2
  5. Intersect(B3, x = 0) → C3
  6. Intersect(B4, x = 0) → C4
  7. Intersect(B5, x = 0) → C5
  8. Intersect(B6, x = 0) → C6
  9. Intersect(B7, x = 0) → C7
  10. Element(A2:A7, questionNum) → givenFunction
  11. Element(B2:B7, questionNum) → targetFunction
  12. Element(C2:C7, questionNum) → targetPoint1
  13. Element(D2:D7, questionNum) → targetPoint2
  14. LaTeX("y=") → equationLabel
  15. Textfield(textUserFunction) → ansBoxEquation
  16. LaTeX(("y=" * targetFunction)) → solution