sinh / 雙曲正弦sh：sinh(x) = [e^x - e^(-x)] / 2 cosh / 雙曲餘弦ch：cosh(x) = [e^x + e^(-x)] / 2 tanh / 雙曲正切th：tanh(x) = sinh(x) / cosh(x)=[e^x - e^(-x)] / [e^x + e^(-x)
] coth / 雙曲餘切：coth(x) = cosh(x) / sinh(x) = [e^x + e^(-x)] / [e^(x) - e^(-x)
] sech / 雙曲正割：sech(x) = 1 / cosh(x) = 2 / [e^x + e^(-x)
] csch / 雙曲餘割：csch(x) = 1 / sinh(x) = 2 / [e^x - e^(-x)] 有的計算器可以直接算,沒的話用指數e^x算. cosh(x) = [e^x + e^(-x)] / 2 ：tanh(x) = sinh(x) / cosh(x)=[e^x - e^(-x)] / [e^x + e^(-x)]
sinh / 雙曲正弦sh：sinh(x) = [e^x - e^(-x)] / 2 cosh / 雙曲餘弦ch：cosh(x) = [e^x + e^(-x)] / 2 tanh / 雙曲正切th：tanh(x) = sinh(x) / cosh(x)=[e^x - e^(-x)] / [e^x + e^(-x)
] coth / 雙曲餘切：coth(x) = cosh(x) / sinh(x) = [e^x + e^(-x)] / [e^(x) - e^(-x)
] sech / 雙曲正割：sech(x) = 1 / cosh(x) = 2 / [e^x + e^(-x)
] csch / 雙曲餘割：csch(x) = 1 / sinh(x) = 2 / [e^x - e^(-x)] 有的計算器可以直接算,沒的話用指數e^x算. cosh(x) = [e^x + e^(-x)] / 2 ：tanh(x) = sinh(x) / cosh(x)=[e^x - e^(-x)] / [e^x + e^(-x)]