Automation control systems with polynomial dynamics description are considered in the paper. Characteristic equation coefficients of these systems are changeable in infinite intervals of actual values. A root portrait concept of an interval control system has been introduced. https://www.bekindtopets.com/super-pick-Rx-Quadruple-Topical-Ointment-Quadritrop-for-Dogs-Cats-30-mL-super-grab/