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Take an examination of hyperbolic sine, sine, cosine and tangent in postgraduate mathematics?
I can only say that I generally don't take the exam, but I advise you to have a look after 10 years. PS: Personal experience shows that the poisonous claws of the Ministry of Education are pervasive. The definitions of improper integral convergence and double integral with parameters can be tested in 10 year. 1 1 I'm not surprised at all. Hyperbolic functions generally appear in differential equations [].