Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsRoots of the Derivatives of a Certain Real Polynomial in the Complex Planehttp://demonstrations.wolfram.com/RootsOfTheDerivativesOfACertainRealPolynomialInTheComplexPla/]]>http://demonstrations.wolfram.com/RootsOfTheDerivativesOfACertainRealPolynomialInTheComplexPla/