KOSINUS HIPERBOLNI y = ch x y = ch x = (e^x + e^(-x))/2

Domena (ch x) = R     Slika (ch x) =[1, ∞>ch x&nb ... sp;  konveksna  Ch xch x/[0, ∞>  bijekcija

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Created by Mathematica  (November 27, 2003)