Unit 4A - Functions Involving Parameters, Vectors, and Matrices
        4.1 Parametric Functions
        4.2 Parametric Functions Modeling Planar
              Motion
        4.3 Parametric Functions and Rates of Change
        4.4 Parametrically Defined Circles and Lines
        4.5 Implicitly Defined Functions
        4.6A Conic Sections - Parabolas
        4.6B Conic Sections - Ellipses
        4.6C Conic Sections - Hyperbolas
        4.7 Parametrization of Implicitly Defined
              Functions
        Unit 4A REVIEW