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Hyperbolic Trigonometric Identity: cosh(2x) & sinh(2x)
In this video I go over the derivations of the double angle (or double argument) identities for hyperbolic trig cosine and sine, namely cosh(2x) and sinh(2x). The derivation of both is pretty straight forward given that 2x = x + x, and thus we can simply replace the y in x + y for both sinh(x+y) and cosh(x+y) identities which I solved in my ...
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