private double determinant3x3 ( double t00 , double t01 , double t02 , double t10 , double t11 , double t12 , double t20 , double t21 , double t22 ) { return ( t00 * ( t11 * t22 - t12 * t21 ) + t01 * ( t12 * t20 - t10 * t22 ) + t02 * ( t10 * t21 - t11 * t20 ) ) ; }
Calculate the determinant of a 3x3 matrix .