绘制二次函数图像 by cemccourseware

GeoGebra 命令及参数

1. Sequence((i, 3.5), i, 12, 15, 1) → PointSpace
2. Flatten(Sequence[Sequence[(i, j), i, -10, 10, 1], j, -10, 10, 1]) → GridSpace
3. Point(Union[GridSpace, {Element[PointSpace, 3]}]) → P3
4. Point(Union[GridSpace, {Element[PointSpace, 2]}]) → P2
5. Point(Union[GridSpace, {Element[PointSpace, 1]}]) → P1
6. UnicodeToLetter(10007) → xmark
7. UnicodeToLetter(10003) → cmark
8. LaTeX("\text{Points:}") → txtPointLbl
9. Element(pValues, Random[1, 4]) → pVal
10. Element(tValues, Random[1, 6]) → tVal
11. Random(1, 2) → kVal
12. Vertex(hintFunc) → vPt, , ,
13. LaTeX(If[pVal ≟ 1, "", If[pVal ≟ -1, "-", ("" * pVal)]]) → txtEqnP1
14. LaTeX(If[sVal ≟ 0, ("" * factor1), (("(" * factor1) * ")")]) → txtEqnP2
15. LaTeX(If[tVal ≟ 0, ("" * factor2), (("(" * factor2) * ")")]) → txtEqnP3
16. LaTeX(chkUserInput) → fbCorrect
17. LaTeX("\text{Plot all three points before \\checking your work.}") → fbNotDone
18. LaTeX("\text{The three points you should plot are the \\two zeros and the vertex. Please try again.}") → fbTryAgain
19. ActiveLbl(activePoint, GridSpace) → pointLabel
20. LaTeX((((((((((((("\text{The zeros are \(" * sVal) * "\) and \( ") * tVal) * "\).}\\ \text{The axis of symmetry is \(x= ") * x(vPt)) * "\).}\\ \text{The \(x\)-coordinate of the vertex is \( ") * x(vPt)) * "\).}\\ \text{Find the \(y\)-coordinate of the vertex by}\\\text{substituting \(x=") * x(vPt)) * "\) into the equation}\\ ") * txtEqn) * ".")) → fbFinal
21. LaTeX((((("\text{\textbf{Question: }" * MainInstruc) * "\\\textbf{Instructions: }") * SpecInstruc) * "}")) → allInstruc