It does something:
(C2) desolve('diff(y(x),x)=y(x),y(x));
x
(D2) y(x) = y(0) %E
I don't know how much you can expect from it, however.
--Jim
On Mon, 2002-03-11 at 15:12, Daniel Lemire wrote:
> I tried to solve diff. equations using ode... doesn't seem very useful...
> does it work at all?
>
> The proper way seems to do
>
> desolve('DIFF(Y(X),X)=Y(X)/(X+sqrt(X*Y)),Y(X));
>
> whereas the documentation points to
>
> Info from file /usr/local/info/maxima.info:
> - Fonction: ODE (equation,y,x)
> a pot-pourri of Ordinary Differential solvers combined in such a
> way as to attempt more and more difficult methods as each fails.
> For example, the first attempt is with ODE2, so therefore, a user
> using ODE can assume he has all the capabilities of ODE2 at the
> very beginning and if he has been using ODE2 in programs they will
> still run if he substitutes ODE (the returned values, and calling
> sequence are identical). In addition, ODE has a number of user
> features which can assist an experienced ODE solver if the basic
> system cannot handle the equation. The equation is of the same
> form as required for ODE2 (which see) and the y and x are
> dependent and independent variables, as with ODE2. For more
> details, do PRINTFILE(ODE,USAGE,SHARE); .
> (D14) FALSE
> (C15)
>
> while admittedly desolve is also in the documentation.
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