指数函数变换 by cemccourseware
几何画板及绘图内容加载中,请稍等……
①本范例演示指数函数图像的平移、伸缩和反射变换;②涉及核心数学概念:指数函数性质、函数变换(平移、伸缩、反射)、坐标系;③作图要点:使用 GeoGebra 命令 If, Shuffle, Element, LaTeX, UnicodeToLetter, Textfield 构造函数图像及参数控制界面,对象包括 ansB, k, h, wholeList, aWhole, aWholeFrac, a, bWhole, bWholeFrac, b, txtB, c, txtInnerFactored, bList, aList 等;④适合高中数学教学,用于理解指数函数变换规律
GeoGebra 命令及参数
If(Random[1, 2] ≟ 1, Random[-7, -1], Random[1, 7]) → kIf(Random[1, 2] ≟ 1, Random[-7, -1], Random[1, 7]) → hShuffle(1…4) → wholeListElement(wholeList, 1) → aWholeIf(Random[1, 2] ≟ 1, aWhole, 1 / aWhole) → aWholeFracIf(Random[1, 2] ≟ 1, (aWholeFrac * (-1)), aWholeFrac) → aElement(wholeList, 2) → bWholeIf(Random[1, 2] ≟ 1, bWhole, 1 / bWhole) → bWholeFracIf(Random[1, 2] ≟ 1, (bWholeFrac * (-1)), bWholeFrac) → bIf(b ≟ -1, "-", If[b ≟ 1, "", NumToImproperFrac[b]]) → txtBLaTeX(((((txtB * "\left(x") * If[c ≟ 0, "", If[(b * h) < 0, "-", "+"]]) * NumToImproperFrac[abs(h)]) * "\right)")) → txtInnerFactoredUnicodeToLetter(10007) → xmarkUnicodeToLetter(10003) → cmarkTextfield(textA) → ansAboxTextfield(textH) → ansHboxTextfield(textK) → ansKboxLaTeX("\text{Vertical \hspace{140} by a factor of}") → verStretchCompress2LaTeX("\text{Reflection in the \(x\)-axis}") → reflectXLaTeX("\text{Translation \hspace{80} by \hspace{50} unit(s)}") → horTranslate2LaTeX("\text{Translation \hspace{80} by \hspace{50} unit(s)}") → verTranslate2LaTeX("\text{Vertical translation}") → verTranslate1LaTeX("\text{Vertical stretch or compression}") → verStretchCompress1LaTeX("\text{Horizontal translation}") → horTranslate1Textfield(textB) → ansBboxLaTeX("\text{Reflection in the \(y\)-axis") → reflectYShuffle({2, 3, 4, 5, 1 / 2, 1 / 3, 1 / 4, 1 / 5}) → possibleBaseValuesElement(possibleBaseValues, 1) → baseLaTeX((("\text{\textbf{Question: }Identify the transformations.\\\textbf{Instructions: }Select and describe all of the transformations that are applied to \(f(x)=(" * FractionText[base]) * ")^x\)\\to obtain the function shown below.}")) → TEXTLaTeX((((txtB * "x") * If[h ≟ 0, "", If[(b * h) > 0, "-", "+"]]) * NumToImproperFrac[abs((b * h))])) → txtInnerExpanded
AI 绘图提示语参考
绘制指数函数的变换图形,展示平移、伸缩和反射。随机生成垂直伸缩因子和水平平移量,绘制基础指数函数和变换后的函数图像。标注关键变换参数,如垂直伸缩系数和水平平移距离,并用文字说明各变换类型。先绘制基础函数,再依次展示平移、伸缩和反射效果,最后标注各变换参数和类型。
以上提示语为根据原始绘图命令整理而来,仅供参考。