Description

Show the complex plane (Argand diagram). The student clicks to place complex numbers. Display each as a+bi and as a point. Show: (1) Addition: z₁+z₂ is the parallelogram diagonal. (2) Multiplication: show z₁·z₂. The student discovers that multiplying by i ROTATES by 90°! i·i=-1 (180° rotation). (3)

Details