hyperbolic cosine

hyperbolic cosine (plural hyperbolic cosines)

  1. (mathematics) a hyperbolic function that is written in symbol cosh and defined as the following: \cosh(x) = \tfrac 1 2 (e^x + e^{-x})
  • French: cosinus hyperbolique
  • Russian: гиперболи́ческий ко́синус

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