'Translate the Curve by (x, y).
Examples
>>> from sympy.geometry.curve import Curve
>>> from sympy import pi
>>> from sympy.abc import x
>>> Curve((x, x), (x, 0, 1)).translate(1, 2)
Curve((x + 1, x + 2), (x, 0, 1))'

def translate(self, x=0, y=0):

    (fx, fy) = self.functions
    return self.func(((fx + x), (fy + y)), self.limits)
