(cls, x, n)
An expression for F(exp_polar(2*I*pi*n)*x), |x| > 1.
An expression for F(exp_polar(2*I*pi*n)*x), |x| > 1.
An expression for F ( exp_polar ( 2 * I * pi * n ) * x ) |x| > 1 .
def _expr_big(cls, x, n):
        """ An expression for F(exp_polar(2*I*pi*n)*x), |x| > 1. """
        raise NotImplementedError
def _expr_big ( cls , x , n ) : raise NotImplementedError