I know [itex]y=e^{t-t^2/2} [/itex] is a solution but how do I reach it? I tried substituting y=uv, making u' terms disappear then I noticed that the resulting u''=(__)u could be solved by a gaussian but this seems like luck to me(adsbygoogle = window.adsbygoogle || []).push({});

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# Y'' + ty' + ty

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