Why hyperbolic functions are actually really nice

Published: 30 October 2023
on channel: Dr. Trefor Bazett
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Today we unpack everything to do with hyperbolic functions. In calculus we often see an analytic definition of hyperbolic cosine and hyperbolic sin expressed as exponential functions. But why? Analytically, this is just asking for the even and odd components of e^x. However, we can connect this geometrically to hyperbolas, and specifically to the area enclosed by a hyperbola.

0:00 Even and Odd Functions
2:24 Analytic Definition of cosh and sinh
3:19 Graphic cosh and sinh
3:53 Taylor series and derivatives
5:12 Hyperbolas
6:42 Defining trig functions geometrically
9:22 Defining hyperbolic trig functions geometrically
10:45 The geometric and analytic definitions are the same
14:03 Euler's Equation
15:06 Brilliant.org/TreforBazett

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