Hi there Justine.
In responce to your question about the math's and physic's requirement's for the ATPL - to be honest it's not to onourous, a bsic knowledge of electrical system's and formulae's,transposition of formulae's is all that is required.
It is more a case of volume that u are required to learn rather than that require's an intricate and extreamly in-depth knowledge.
If you require any further information - please do not hesitate to contact me - as i have just started my JAA ATPL license exam's.