Khan Academy on a Stick
Hyperbolic functions
Motivation and understanding of hyperbolic functions.
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Hyperbolic function inspiration
Exploring a motivation for even defining hyperbolic sine and cosine
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Hyperbolic functions and the unit hyperbola
Why they are called hyperbolic functions
Intro to hyperbolic functions
You know your regular trig functions that are defined with the help of the unit circle. We will now define a new class of functions constructed from exponentials that have an eery resemblance to those classic trig functions (but are still quite different).