Physics,calculus
MY SON IS IN CLASS 2014, SURE THESE COURSES ARE TOUGH,BUT SON/DAUGHTER WOULD HAVE HAD TO HAVE PRETTY GOOD GRADES TO EVEN GET ACCEPTED, THERE ARE PLENTY OF SOURCES FOR ASSISTANCE IF ONE IS FINDING CLASSES 'DIFFICULT', IF YOU WANT IT YOU WILL FIND IT, JUST ASK, THERE IS HELP...