This article makes an extension on the problem of integral factor in the total differential equation and has drawn two theorems.
本文就恰当微分方程的积分因子问题进行推广，得出两个定理。
This article makes an extension on the problem of integral factor in the total differential equation and has drawn two theorems.
本文就恰当微分方程的积分因子问题进行推广，得出两个定理。
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