First Order Differential classes - Linear Equations, political groups, Exact Equations, Equilibrium Solutions, Modeling Problems. Laplace Transforms - Definition, Inverse Transforms, request methods, Heaviside Functions, Dirac-Delta Function, Solving IVP's, Nonhomogeneous IVP, Nonconstant Coefficient IVP, Convolution Integral. books, Phase Plane, Nonhomogeneous Systems, Laplace Transforms. software textVolume - Series Solutions, Euler Differential intentions.