# x'' + P(x') x' + u(x) = F(t), P(x')>0, F(t+T)=F(t), ,<F(t)> = 0

Discussion in 'Math Research' started by Arboristeria, Feb 21, 2005.

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Discussion in 'Math Research' started by Arboristeria, Feb 21, 2005.

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