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GeoGebraGeoGebra Classroom

Complex Number Multiplication

Use the diagram below to research the effects of multiplying complex numbers. Look for a geometrical meaning too!
Hints: Set one number to z1 = 1 and move z2 in a circle. Then set z1 = 1 + i and repeat. What happens if z1 and z2 are set to the same value? How does this help with z2.