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The language of physics is mathematics. In order to study physics seriously, one needs to learn mathematics that took generations of brilliant people centuries to work out. Algebra, for example, was cutting-edge mathematics when it was being developed in Baghdad in the 9th century. But today it's just the first step along the journey.
Answer Wiki. Every year or every other year, there will be the one freshman who does something like {Physics 251a (grad QM), Physics 143b (undergrad QM), Physics 16 (honors mechanics), Math 55}. A couple may skip Math 55 in favor of several graduate-level math classes.