The solution method and the solution formula of one steps differential equation' s initial value problem is analyzed. Instance analyzed using solution formula to solving one stage linear differential equation problem.At last, the initial solution formula application of one steps differential equation in the valuation issue is analyzed.%分析了一阶线性微分方程初值问题的解法和求解公式,并实例分析了运用求解公式求解一阶线性微分方程初值问题.最后分析了非齐次方程的初值解公式在微分方程解的估值问题中的应用.
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