(self)
return (
            a * (e * k - f * h)
            - b * (k * d - f * g)
            + c * (d * h - e * g)
        )
Returns the determinant of this 3x3 matrix.
Returns the determinant of this 3x3 matrix.
Returns the determinant of this 3x3 matrix .
def _determinant(self):
        """
        Returns the determinant of this 3x3 matrix.
        """
        # http://en.wikipedia.org/wiki/Inverse_matrix#Inversion_of_3.C3.973_matrices
        a, b, c, d, e, f, g, h, k = self.matrix
        return (
            a * (e * k - f * h)
            - b * (k * d - f * g)
            + c * (d * h - e * g)
        )
def _determinant ( self ) : # http://en.wikipedia.org/wiki/Inverse_matrix#Inversion_of_3.C3.973_matrices a , b , c , d , e , f , g , h , k = self . matrix return ( a * ( e * k - f * h ) - b * ( k * d - f * g ) + c * ( d * h - e * g ) )