Acknowledgements
This free course was written by the School of Mathematics and Statistics.
The material acknowledged below is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this free course:
Course image: © Open University
Section 3.1: © MichaelMaggs; adapted under CC BY-SA 3.0; source: https://commons.wikimedia.org/wiki/File:Falling_ball.jpg
Activity 18: © Viktorfischer / www.dreamstime.com
Every effort has been made to contact copyright holders. If any have been inadvertently overlooked the publishers will be pleased to make the necessary arrangements at the first opportunity.