the method of constant variation
...常数变易法；函数增量法 [gap=10541]Key words : the original function method; auxiliary function ; the method of constant variation; function increment method.
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the method of constant variation
恒变法恒变法
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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In this paper, we introduced another method of variation of constant of the second-order linear equation.
介绍了二阶线性微分方程的又一种常数变异法。
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Thus, the formula given by this article is much easier and quicker than the tedious calculations of the constant variation method.
与常数变易法的繁琐计算相比，该公式十分方便快捷。
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