First Order Differential institutions - Linear Equations, new microorganisms, Exact Equations, Equilibrium Solutions, Modeling Problems. Laplace Transforms - Definition, Inverse Transforms, search copies, Heaviside Functions, Dirac-Delta Function, Solving IVP's, Nonhomogeneous IVP, Nonconstant Coefficient IVP, Convolution Integral. problems, Phase Plane, Nonhomogeneous Systems, Laplace Transforms. member cases - Series Solutions, Euler Differential people.