catenaria , iperbolica
cartesiana
y=sinh(x)
y=cosh(x)

y= (e^x-e^(-x))/2
y =(e^x + e^(-x))/2

f(x) = sinh(x)
g(x) = cosh(x)
h(x) = (ℯ^(x) - ℯ^(-x)) / 2
p(x) = (ℯ^(x) + ℯ^(-x)) / 2