I'm a chemistry major, but when I entered uni 3 years ago I was actually a performance arts major. Needless to say, at the time I was quite terrified of all math and science, and it took a bit of easing into; but I had copped out with easier math series and easier physics series. I'm excelling at my chemistry classes, including quantum mechanics, but that's as far as my linear algebra goes and I have never touched partial differential equations. I found that I really enjoy physics, but I don't have the math background--not to mention I was quite weak in it to begin with. I'm taking an upper division cosmology class now, and I'm worried I will get overwhelmed... Any tips? Should I even bother with physics classes with my background?