Volume 20, Number 4, Winter 2012
STABILITY ANALYSIS OF DELAY
DIFFERENTIAL EQUATIONS WITH TWO
XIHUI LIN AND HAO WANG
Abstract. We use an algebraic method to derive a closed
form for stability switching curves of delayed systems with two
delays and delay independent coecients for the rst time.
Furthermore, we provide some properties of these curves and
stability switching directions. Our work is an extension of Gu et
al.'s work  to a more general case using a different approach.