archimedes chebyshev cube root compass and straightedge constructions complex conjugate complex number conic section cyclic group derivative discrete fourier transform discriminant doubling the cube egyptian mathematics elliptic curve equation generating trigonometric tables geometry gerolamo cardano greek mathematics hippocrates horner scheme indian mathematics inflection point intermediate value theorem joseph louis lagrange linear equation lodovico ferrari mactutor history of mathematics archive mathematics mathematics in medieval islam maxima and minima menaechmus negative and non-negative numbers normal subgroup numerical analysis persian literature planetmath polynomial quadratic equation quadratic function quartic equation quartic function quintic equation rafael bombelli rational root theorem real number resultant root of unity scipione del ferro symmetric group tartaglia thomas harriot two-dimensional graph