journal6 ›› 2003, Vol. 24 ›› Issue (2): 39-42.

• Mathematics • Previous Articles     Next Articles

The Discussion of Some Solutions of the Equation a·(t-τ)+bx·(t)+cx(t-τ)+dx(t)=tk


  1.  (Faculty of Science,Southern Institute of Metallurgy,Ganzhou 341000,China)
  • Online:2003-06-15 Published:2012-11-07

Abstract: By using the method of undetermined coefficients,the author discusses some solutions of the equation ax·(t-τ)+bx·(t)+cx(t-τ)+dx(t)=tk.The expressions of the solutions are obtained in the following four special cases:(1)c+d≠0;(2)c+d=0,a+b-cτ≠0;(3)c+d=0,a+b-cτ=0,cτ-2a≠0;(4)c+d=0,a+b-cτ=0,cτ-2a=0.

Key words: Neutral differential difference equation, solution, expression

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