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Hello everyone, this is my first time posting on the site. I'm 18, live in California, still in high school, and I'm gonna graduate come November. I'm going to either a state university, UC Irvine, or a community college and majoring in Astrophysics. The only math I know is algebra and geometry. My question is as follows. Do I have to know calculus and other math material prior to starting my freshman year? Or will I have to take additional classes to learn it?