A Polynomial equation whose Roots all have Negative Real Parts. For a
Real Quadratic Equation

the stability conditions are . For a Real Cubic Equation

the stability conditions are and .

**References**

Birkhoff, G. and Mac Lane, S. *A Survey of Modern Algebra, 3rd ed.* New York: Macmillan, pp. 108-109, 1965.

© 1996-9

1999-05-26