Source: wikibot/inverse-lemniscate-functions
= Inverse lemniscate functions
{wiki=Inverse_lemniscate_functions}
The inverse lemniscate functions are mathematical functions that are related to the geometrical shape known as the lemniscate, which resembles a figure-eight or an infinity symbol (∞). The most commonly referenced lemniscate is the lemniscate of Bernoulli, which is defined by the equation: \\\[ (x^2 + y^2)^2 = a^2 (x^2 - y^2) \\\] for some positive constant \\(a\\).