Applied Mathematics and Mechanics (English Edition) ›› 1993, Vol. 14 ›› Issue (5): 481-497.
• 论文 • 上一篇
卢德渊, 廖宗璜
Lu De-yuan, Liao Zong-huang
摘要: In this paper, we give some sufficient conditions of the instability for the fourth order linear differential equation with varied coefficient, at least one of the characteristic roots of which has positive real part, by means of Liapunov’s second method.