FUNZIONI IPERBOLICHE

f(x) = cosh(x)
g(x) = sinh(x)
h(x) = tanh(x)
p(x) = (2 * ℯ^(x)) / (-1 + ℯ^(2 * x))
q(x) = (2 * ℯ^(x)) / (1 + ℯ^(2 * x))
r(x) = (-1 + ℯ^(2 * x)) / (1 + ℯ^(2 * x))