探索保角映射 f(z)=2π / sqrt(9.82) z⁰·⁵
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①本范例演示了复变函数f(z)=2π / sqrt(9.82) z⁰·⁵的保角映射特性及其图形表现;②涉及的核心数学概念包括复变函数、保角映射、相似变换、极坐标变换等;③作图要点提炼自GeoGebra命令:Point, Sequence, Locus, Textfield, Polygon, Surface等,用于构建函数图像、轨迹、多边形等几何对象;④适合高中及以上数学学习者,用于理解复变函数的几何意义与变换特性。
GeoGebra 命令及参数
Point(yAxis) → CPoint(xAxis) → ASequence(Segment[A + (0, y(C) + (k * dy)), ((-x(A)), y(C) + (k * dy))], k, 0, k0) → l1, {10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10}Point(g1) → z_1Point(l1) → ELocus(fz_{1}, z_1) → loc1Sequence(CurveCartesian[real(f(u, v)), imaginary(f(u, v)), u, -10, 10], v, -10, 10) → l_{uv}, {(real(f(u, -10)), imaginary(f(u, -10))), (real(f(u, -9)), imaginary(f(u, -9))), (real(f(u, -8)), imaginary(f(u, -8))), (real(f(u, -7)), imaginary(f(u, -7))), (real(f(u, -6)), imaginary(f(u, -6))), (real(f(u, -5)), imaginary(f(u, -5))), (real(f(u, -4)), imaginary(f(u, -4))), (real(f(u, -3)), imaginary(f(u, -3))), (real(f(u, -2)), imaginary(f(u, -2))), (real(f(u, -1)), imaginary(f(u, -1))), (real(f(u, 0)), imaginary(f(u, 0))), (real(f(u, 1)), imaginary(f(u, 1))), (real(f(u, 2)), imaginary(f(u, 2))), (real(f(u, 3)), imaginary(f(u, 3))), (real(f(u, 4)), imaginary(f(u, 4))), (real(f(u, 5)), imaginary(f(u, 5))), (real(f(u, 6)), imaginary(f(u, 6))), (real(f(u, 7)), imaginary(f(u, 7))), (real(f(u, 8)), imaginary(f(u, 8))), (real(f(u, 9)), imaginary(f(u, 9))), (real(f(u, 10)), imaginary(f(u, 10)))}Sequence(CurveCartesian[real(f(u, v)), imaginary(f(u, v)), v, -10, 10], u, -10, 10) → l_{vu}, {(real(f(-10, v)), imaginary(f(-10, v))), (real(f(-9, v)), imaginary(f(-9, v))), (real(f(-8, v)), imaginary(f(-8, v))), (real(f(-7, v)), imaginary(f(-7, v))), (real(f(-6, v)), imaginary(f(-6, v))), (real(f(-5, v)), imaginary(f(-5, v))), (real(f(-4, v)), imaginary(f(-4, v))), (real(f(-3, v)), imaginary(f(-3, v))), (real(f(-2, v)), imaginary(f(-2, v))), (real(f(-1, v)), imaginary(f(-1, v))), (real(f(0, v)), imaginary(f(0, v))), (real(f(1, v)), imaginary(f(1, v))), (real(f(2, v)), imaginary(f(2, v))), (real(f(3, v)), imaginary(f(3, v))), (real(f(4, v)), imaginary(f(4, v))), (real(f(5, v)), imaginary(f(5, v))), (real(f(6, v)), imaginary(f(6, v))), (real(f(7, v)), imaginary(f(7, v))), (real(f(8, v)), imaginary(f(8, v))), (real(f(9, v)), imaginary(f(9, v))), (real(f(10, v)), imaginary(f(10, v)))}Sequence(Segment[C + (x(A) + (k * dx), 0), (0, (-y(C))) + (x(A) + (k * dx), 0)], k, 0, k0) → l2, {9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867, 9.92203865203867}Point(g2) → z_{2}Locus(fz_{2}, z_{2}) → loc2Textfield(k0) → InputBox1Textfield(m1) → InputBox2Textfield(m2) → InputBox3Polygon(D, F, n) → poli1, s, l, J, N, R, V, H, I, K, L, t, f_1, j_1, n_1, s_1, i, j, kPoint(poli1) → z_3Locus(fz_{3}, z_3) → loc3Surface(f(u + (v * ί)), u, -2, 2, v, -2, 2) → pTextfield(φ) → InputBox4
AI 绘图提示语参考
在平面坐标中展示复函数的保角映射:以复数幂的形式取 f(z)=2π/√9.82·z^0.5,对一组定义域网格生成对应的曲线轨迹,分别描绘让自变量实部或虚部变化时的像线;同时再选取若干点并连到它们的像点,形成可追踪的映射路径。绘制坐标轴参考点后,生成并显示多个映射轨迹(包含由不同参数形成的一组曲线),再在复平面上给出若干标注文本与可调输入框,用于控制网格步数与相关参数。
以上提示语为根据原始绘图命令整理而来,仅供参考。