Hi! I'm a new undergraduate physics student from Mexico, I study in UNAM. The reason why I posted this here is because of desperately needed advice and support. My first two weeks of school have been pretty hard and I cannot grasp most of the things we're being taught. For example, mathematical demostrations in calculus are hell, and we also get to solve differential equations on the introductory physics class... My mathematical knowledge is more practical than theoretical in nature, so most of the stuff I thought I knew isn't it anymore. Also, I only took some basic calculus at high school, so I only know some basic differentiation and integration. It's my first semester and I've been considering dropping out for the last two days.