(self)
return self[1, 0]
The C parameter of the Matrix.

        Examples
        ========

        >>> from sympy.physics.gaussopt import RayTransferMatrix
        >>> mat = RayTransferMatrix(1, 2, 3, 4)
        >>> mat.C
        3
The C parameter of the Matrix.
The C parameter of the Matrix .
def C(self):
        """
        The C parameter of the Matrix.

        Examples
        ========

        >>> from sympy.physics.gaussopt import RayTransferMatrix
        >>> mat = RayTransferMatrix(1, 2, 3, 4)
        >>> mat.C
        3
        """
        return self[1, 0]
def C ( self ) : return self [ 1 , 0 ]