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名詞

hyperbolic sine (複数形 hyperbolic sines)

1. (mathematics) A hyperbolic function that is the analogue of the sine function for hyperbolic spaces, taking in a hyperbolic angle as an argument and returning the y-coordinate for the corresponding point on the unit hyperbola. It is written in symbol sinh and can be represented as: ${\displaystyle \sinh(x)={\tfrac {1}{2}}(e^{x}-e^{-x})}$