向量场的通量线积分
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本范例演示了向量场的通量线积分。核心数学概念包括向量场、线积分和通量。通过构造向量场、路径积分和通量计算,展示了如何利用GeoGebra命令进行几何作图。适合微积分课程中的高级学生或教师使用。
GeoGebra 命令及参数
SelectedIndex(pathNames) → pathIndexMidpoint(N, P) → QElement(pathList, pathIndex) → pathDerivative(path) → DDpathParametricDerivative(path) → DpathDistance(N, P) → NPElement(CompX, pathIndex) → RTXDerivative(RTX, x) → DRTXElement(CompY, pathIndex) → RTYDerivative(RTY, x) → DRTYCurveCartesian(x(path(t)), y(path(t)), t, 0, s) → partPathIntegral(MUL, 0, 1) → FluxTextfield(F_1) → InputBox1Textfield(F_2) → InputBox2Segment(path(0.3), path(0.3 + 0.01)) → arrow1Segment(path(0.6), path(0.6 + 0.01)) → arrow2If(Flux ≟ Flux, Flux, Sum[Sequence[(((F_1(x(path(i + dS / 2)), y(path(i + dS / 2))), F_2(x(path(i + dS / 2)), y(path(i + dS / 2)))) * (y(Dpath(i + dS / 2)), (-x(Dpath(i + dS / 2))))) * dS), i, 0, s - dS, dS]]) → FLUUXSequence(Vector[path(i), path(i) + ((scale * F_1(x(path(i)), y(path(i)))), (scale * F_2(x(path(i)), y(path(i)))))], i, 0, s, 0.15) → PathVectorsSequence(path(i), i, 0.25, 0.75, 0.25) → PtPathListSequence(Vector[(0, 0), (1 / sqrt((y(DDpath(i)))^(2) + (x(DDpath(i)))^(2)) * (y(DDpath(i)), (-x(DDpath(i)))))], i, 0.25, 0.75, 0.25) → norvectorsListTranslate(Vector[Element[norvectorsList, 1]], Element[PtPathList, 1]) → uTranslate(Vector[Element[norvectorsList, 2]], Element[PtPathList, 2]) → vTranslate(Vector[Element[norvectorsList, 3]], Element[PtPathList, 3]) → wTextfield(xA) → InputBox3Textfield(yA) → InputBox4Textfield(xB) → InputBox5Textfield(yB) → InputBox6