Answers and Hints to Exercises

We have provided answers to the Test Questions for each chapter. These summarize the relevant parts of the chapter, but they should not be taken as being in any sense definitive. In particular, we can offer no guarantee that our answers would satisfy any particular board of examiners.

The point of the Discussion Topics and Practical Tasks lies in discussing and doing them, so we cannot provide answers to these. Please do not ask for 'sample solutions': it is inevitable that some students would see these as being 'correct' solutions, and we do not wish to convey that impression. Discussion Topics and Practical Tasks do not generally have a single correct solution. In some cases, though, we have provided some starting points or hints for anyone who is completely stuck.

If you do not find the answer to any test question adequate, you will always be able to find a fuller explanation in the chapter itself.

We assume that you will have access to course tutors and other sources of help in your college. We are sorry but we cannot provide individual tutorial assistance. However, if you think you have found a mistake in a question or its answer, then do let us know about it.

We apologize for the excessive length of these pages. Owing to demand, we have had to put this material up quickly rather than delay until we had time to implement a more usable and accessible means of presentation. However, this is only a temporary situation, and we will improve it when we can. If you are experiencing particular accessibility problems we would be grateful if you would let us know.