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<p>Well…real analysis and advanced calculus (which was “real analysis light” at my undergrad school) is basically the theoretical topics of Calculus I & II, so you would need Calculus I & II to take a real analysis course. No way one could go from high-school pre-calculus and take a junior-level analysis course.</p>
<p>Also prerequisites are established not ONLY for prior background material but also for mathematical maturity. Using a sports analogy, yeah a high-school football player COULD play in the NFL but it would not be advised…which is why the NFL requires 3 years of college football.</p>