1) The document discusses the mathematical preliminaries needed for studying control systems, including linear ordinary differential equations (ODEs) with constant coefficients. 2) It describes how the exponential function is the unique solution to linear ODEs, and presents the solutions to both homogeneous and inhomogeneous first order ODEs. 3) Laplace transforms are introduced as a tool to convert ODEs to algebraic equations, and standard inputs like impulse, step, ramp and sinusoidal functions are described that are used to analyze system responses.