In methods of analyzing general perturbations, general differential equations of motion are solved, usually by series approximations, giving a result which is usually in terms of algebraic and trigonometric functions of the orbital elements of the body in question and the perturbing bodies.
General differential equations of motion are solved. This was usually by series approximations. This was in methods of analyzing general perturbations. General differential equations of motion were giving a result. This was in methods of analyzing general perturbations. This result is usually in terms of algebraic and trigonometric functions of the orbital elements of the body in question. This result is usually in the perturbing bodies.