I finished an Avionics degree last year (half aeronautical and half EEE). We did Engineering Maths 1st,2nd and 3rd year. I used a booked called "Engineering Mathematics" by Croft (3rd edition), published by Prentice Hall and it was highly beneficial. You'll find that your lecturers will use references to a book so it's best to see what they recommend before splashing out the £40-£60 before the course....
Best of Luck!
