• This paper has found general integral formulas of some types of two - order nonlinear ordinary differential equations by first integral.

    本文非线性微分方程利用首次积分求得了积分公式

    youdao

  • This paper has found general integral formulas of some types of two - order nonlinear ordinary differential equations by first integral.

    本文非线性微分方程利用首次积分求得了积分公式

    youdao

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