5. The hyperbolic trigonometric functions are defined over the complex plane via the formulas e² - e-z e² +e=² 2 and cos

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5 The Hyperbolic Trigonometric Functions Are Defined Over The Complex Plane Via The Formulas E E Z E E 2 And Cos 1 (31.59 KiB) Viewed 18 times

5. The hyperbolic trigonometric functions are defined over the complex plane via the formulas e² - e-z e² +e=² 2 and cosh z = sinhz = By following the similar example in the book for calculating sin -1 cosh ¹(z) = log (z+ √z² − 1), where both sides of the identity are interpreted as sets. 2 , prove that