Method arccoth

MathParser/src/com/aghajari/math/Functions.java:471–473

(double x)

    }

    public static double arccoth(double x) {
        return arctanh(1.0 / x);
    }

    public static double c(double x, double y) {
        return factorial(x) / (factorial(y) * factorial(x - y));