sage: t, g = var('t, g')
sage: y = function('y', t)
sage: eqn = diff(y, t, 2) == g
sage: desolve(eqn, y, ivar = t)
1/2*g*t^2 + k2*t + k1

To read the documentation, just type desolve? at the command-line.

On Sat, Jan 30, 2010 at 10:59 PM, fromken <[email protected]> wrote:
> Hi there,
>
>  I'm trying to solve a differential equation problem as following
>
>   t, g = var('t, g')
>
>   y = function('s', t)
>
>   eqn = diff(y, t, 2) == g
>
>   deeq = desolve(eqn, y)
>
>
>
>   I thought that the variable g was a symbolic constant.    but, I
> have had an error message(Value Error: unable to determine independent
> variable..)
>
>    How can I fix the problem?
>
> --
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>

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