formula of hyperbolic function
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Mathematics reference Hyperbolic trigonometry identities 18Ma3 MathRef
tanh2 x + sech2 x = 1 equation 8
coth2 x - csch2 x = 1 equation 9
sinh (x + y) = sinh x cosh y + cosh x sinh y equation 10
sinh (x - y) = sinh x cosh y - cosh x sinh y equation 11
tanh2 x + sech2 x = 1 equation 8
coth2 x - csch2 x = 1 equation 9
sinh (x + y) = sinh x cosh y + cosh x sinh y equation 10
sinh (x - y) = sinh x cosh y - cosh x sinh y equation 11
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