Stage: 4 Challenge Level: 
As you've probably spotted, we're playing with some of the
machinery needed to prove the Fundamental Theorem of Algebra
here.
Representing numbers. Argand diagram. Sine. Complex numbers. Individual. Quadratic equations. Roots of polynomial equations. nth roots of unity. Rotations. Interactivities.
Published March 2007,April 2007.
Copyright © 2007. University of Cambridge. All rights reserved.
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