I am a second year math/biology major, and I constantly see references to sinh, cosh, etc. or "hypergeometric functions." For instance, I was on the Wolfram Mathematica Online Integrator, and out of curiosity I asked it to integrate sec(x), which lead to the answer 2tanh[tex]^{-1}[/tex](tan[tex]\frac{x}{2}[/tex])+c. However, I have never been introduced to these topics in any of the classes I've taken (Calculus series, multi-variable calculus, introduction to proof, linear algebra). What classes are these topics typically introduced in? Should I know them by now? Thanks.(adsbygoogle = window.adsbygoogle || []).push({});

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