Dear folks, I decided to prepare myself for taking the GRE on mathematics and physics next year, and coming from a non-traditional path (undergrad in music, basically self-taught in scientific matters), I'd like to ask you about some reference books and, thus, about the actual level of each subject on the exams. For instance, for electromagnetics am I safe with my Purcell's E&M or may I read something like Jackson's book? Another example is real analysis (since the syllabus given by the site is not that clear): Rudin's Principles is OK or may I complement it with something else? Any comments and thoughts are highly welcome! Thanks in advance, best regards, Seg.