dont be frightened by this; there are the odd forumlae that must be memorised such as the perpendicular distance formula but they will stick in your head after a lot of practise.If you think you could remember over 20 formulae then you should be ok. I dropped Adv maths to general math after a year, math just isn't my thing. It's not so much hard content but just a lot of memory required, not to mention you WILL need to practice this shit a lot.