The hyperbolic version of Euler's identitypic.twitter.com/7OZyDeQcsC
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The hyperbolic Euler's identity actually trivially follows from the fact that any function can be split into: (1) An even part: [f(x) + f(-x)]/2 (2) And an odd part: [f(x) - f(-x)]/2pic.twitter.com/UTwLJQKpVG
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Shouldn't it be "sinh(ix) = i*sin(x)"?!
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Makes you wonder why they are the neglected cousins of the trig sisters good only for hanging chains around.
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Plug iθ into x and obtain relation between hyperbolic and trigonometric functions
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