Numerical Analysis Deriving the Quadratic Equation From the Roots Up Solving Quadratics using gradients at the roots

Numerical Analysis The Simplest Cubic Root A very simple Cubic polynomial root approximation using architectural symmetry and similar triangles

Numerical Analysis Cubic Polynomials - Rotation to Calculate Roots Exploiting the amazing symmetry of cubic polynomials to quickly find the first root using Newtonâ€™s method.