H. K. Abdullah, Amal Khalaf Haydar, Kawther Reyadh Obead
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Characteristic roots of a second order retarded functional differential equation via spectral-tau method
In this paper, we have found the solution of second-order delay differential equations of retarded type with multiple delays. As well as developing an approximation for finding characteristic roots for such delay differential equations via the method of spectral tau which depends on the basis mixed Fourier basis or shifted Chebyshev polynomials.
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