Maxima doesn't find an expected solution for a diff eq with desolve

Hi,

thanks a lot for the good and rapid advices, also my thanks to Richard and 
Michael for there answers.

> I think Mr. Lutus used the command:
> 
> atvalue(y(t),t=0,0);
> 
> (before desolve) and he forgot to say that.

This got my problems solved, he really used atvalue in a different order than 
I expected it.


Best regards,
Marcus Menzel