MathGroup Archive 2004

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"Rubbish" integration outputs


I always find me in troubles when integrating ODE that I think Mathematica
should be able to do. It's all right for the very simplest, but consider for
instance the following:

\!\(DSolve[\((x + 2  x\^2 + x\^3)\) \(y'\)[x] + \(x\^2\) \(y''\)[x] == A, y,

'A' a constant. Well, the problem is that I don't even the clue that
Mathematica *cannot* integrate it, there is some output with gibberish, like
K$14646 and the like (those are intermediary variables I guess). So what is
wrong? Is Mathematica expected to return such outputs?


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