Powers of Complex Numbers by Judah L Schwartz

Powers of Complex Numbers by Judah L Schwartz
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2018-12-11 00:13
This example demonstrates the geometric interpretation of powers of complex numbers, showing the effect of rotation and scaling through complex multiplication. Key math concepts include the polar form of complex numbers, Euler's formula, and transformations of rotation and scaling. Constructed using GeoGebra commands like Intersect, Circle, Rotate, Angle, ToComplex, ToPolar, Vector, Mirror, involving objects such as N, A, c, C, Nroot, α_1, u, v, α, NrootPower, w, z, β, and others. Suitable for high school and above, helping learners understand the geometric intuition of complex operations and transformations in the complex plane.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → A
  2. Circle(A, 1) → c
  3. Rotate(C, (360 / N)°, A) → Nroot
  4. Angle(C, A, Nroot) → α_1
  5. ToComplex(Vector[Nroot]) → u
  6. ToPolar(Vector[Nroot]) → v
  7. Vector(NrootPower) → w
  8. ToPolar(w) → z
  9. Angle(C, A, NrootPower) → β
  10. ToComplex(w) → a
  11. ToComplex(Vector[Z]) → CZ
  12. Mirror(Z, xAxis) → ZC
  13. Mirror(ZC, c) → ZCI
  14. ToComplex(Vector[ZC]) → CZC
  15. ToComplex(Vector[ZCI]) → CZCI
  16. Vector(Zpower) → h
  17. Vector(z_1) → j
  18. Vector(z_2) → k
  19. Vector(z_3show) → l
  20. Vector(z_2show) → m
  21. Mirror(Z, c) → ZRI