Complex Roots and PolynomialsExplores complex roots, polynomials, and factorizations, including roots of unity and the fundamental theorem of algebra.
Vector Subspaces in R4Explores vector subspaces in R4, symmetric matrices, basis vectors, and canonical forms.
Principal Axes TheoremExplains the Principal Axes Theorem for symmetric matrices and quadratic forms, showing the existence of orthogonal matrices for diagonalization.
