The equations are extra nonlinear differential equations. The dexter function is not continuous in field of real number.

该方程右边的函数在实数域内不连续，是一个高度非线性微分方程组。

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The equations are extra nonlinear differential equations. the dexter function is not continuous in field of real number .

该方程右边的函数在实数域内不连续，是一个高度非线性微分方程组。

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By using variables separation in the complex number field, the real analytical solution in the form of Fourier series was obtained.

在复数域内利用分离变量法，得到了这类方程的级数形式的解析解，而最后的解是实数形式。

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Managers can set goals for field organizers -- number of calls made, number of doors knocked -- and see, in real time, how people are doing against all kinds of metrics.

CNN: How Obama's data-crunching prowess may get him re-elected