Hi, has anyone here ever seen anything like this?(adsbygoogle = window.adsbygoogle || []).push({});

f = f(x,y,t)

g = g(x,y,t)

[tex]\frac{ \partial^{2}{f} }{ \partial {y}\partial {t} } } +

\frac{ \partial^{2}{f} }{ \partial {x}\partial {t} } }+

\frac{\partial{f}}{\partial{t}}+

\frac{\partial{f}}{\partial{y}}+

\frac{\partial{f}}{\partial{x}}+f = g[/tex]

Personnally, my blood pressure has begun to drop dangerously. You can drop in a real constant by each term. Any info or sites on DE's with mixed derivatives would be helpful. Can any DE with mixed derivatives at all be solved analytically? A good direction for numerical solving would be helpful too.

If it's as satanic as it first seems, I'll probably do approximations to simplify my model.

Thanks.

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# Mixed derivative in DE

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