I started with Mary Boas' book "Mathematical Methods in the Physical Sciences". Now it is stressed in the introduction to make homework and do the problems. However, I would very much like to know if I got the answers right, and I even prefer if the problems are worked-out. So I guess my question is: is there a resource to worked-out problems in this book, or is there a book with worked-out problems that follows the setup of Boas' book? While I'm at it: what exactly are the prerequisites of this book of Mary Boas? I already run into problems solving the problems in section 1.2!