On the instability of solutions of an eighth order nonlinear differential equation of retarded type
In this paper, we give some sufficient conditions on the instability of the zero solution of a kind of eighth order nonlinear differential equations of retarded type by using the Lyapunov direct method. The obtained sufficient conditions improve an existing result in the literature.
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| Main Author: | |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Universidad Católica del Norte, Departamento de Matemáticas
2011
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| Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-09172011000100004 |
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