Inverse Hyperbolic Trigonometry as Logarithms: cosh^-1(x)

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In this video I go over the inverse hyperbolic cosine or cosh^-1(x) function and show that it can be written as a logarithm and equal ln(x+sqrt(x^2-1)).

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I don't always deal with inverse hyperbolic functions but when I do I rather convert it to a logarithm ;)

mes
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I haven't watched the full video but I can't help but notice at 2:40 you say parabola even though the shape of Cosh^-1(x) is a catenary. But anyways this is an older video I can't really give criticism I just don't want others to think hyperbolae(hyperbolas) are the same shape as parabolae(parabolas)

faceless