Zhang Xue-yuan
Abstract
Giving a sufficient condition to one order linear delay differential equation with variable coefficient and then leading a concept of characteristic equation into it,we obtain an analytic expression formula of its general solution.
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Giving a sufficient condition to one order linear delay differential equation with variable coefficient and then leading a concept of characteristic equation into it,we obtain an analytic expression formula of its general solution.
Key concepts: Variable coefficient, Mathematics, Linear differential equation, Variable (mathematics), Homogeneous differential equation, Mathematical analysis, Differential equation, Order (exchange)