## MAS192 Differential and Difference Equations (NJTech)

 Semester 1, 2017/18 10 Credits Lecturer: Dr Istvan Ballai Reading List Aims Outcomes Assessment Full Syllabus

This unit introduces students to differential and difference equations, which are fundamental to many areas of applied mathematics. The course is based around techniques for solving elementary first and second order differential and difference equations, using both analytic and simple numerical methods. The use of the computer algebra package Maple to solve problems is an important part of the course. The course also explores one area in which the techniques learned can be applied, namely population dynamics.

There are no prerequisites for this module.
No other modules have this module as a prerequisite.

## Aims

• Introduce elementary techniques for solving first and second order differential and difference equations;
• Introduce some simple applications of differential and difference equations in population dynamics.

## Learning outcomes

• Be able to solve simple first and second order differential and difference equations;
• Understand simple applications of differential and difference equations in population dynamics and real life applications, e.g. interest calculation, simple harmonic oscillator, etc.

32 lectures, 32 tutorials

## Assessment

One formal 2 hour written examination. All questions compulsory.

## Full syllabus

• Integration: Revision of indefinite integrals and integration methods
• First order differential equations: definition, variable separation, integrating factor, homogeneous differential equations, Ricatti-type differential equations, applications
• Second order differential equations: homogeneous/non-homogeneous, the method of undetermined coefficients, Euler-Cauchy differential equation, the problem of forced oscillators (resonance, damping).
• Population dynamics: one species models (the Malthusian model, the logistic model, the problem of constant harvesting, equilibrium levels), two-species models (the prey-predator model, the Lotka-Volterra equations)
• Discrete mathematics and difference equations: First order linear difference equations, second order homogeneous and non-homogeneous difference equations and application to finance.