OK, now that I am loading dynamics, first, rk fails:
Maxima is unable to evaluate the predicate:
errexpl
[[0, init]]
the double bracket business concerns me. init is a 3 vector. What
is [[0, init]] ?
On Jan 24, 2007, at 12:13 PM, Daniel Lakeland wrote:
> On Wed, Jan 24, 2007 at 12:02:55PM -0500, Dan Solomon wrote:
>> I have prepared a 3 vector, dxdt, a function of x, and an initial
>> vector (called init). Then I issue
>>
>> rk(dxdt,x,init,[t,0,.1,1.]);
>> and maxima responds by typing out
>>
>> rk (the functional definition of dxdt, x, init, [t,0,.1,1.])
>>
>> how do i get it to give me an answer?
>
> you have to "load(dynamics);" before issing the rk command.
>
>
> --
> Daniel Lakeland
> dlakelan at street-artists.org
> http://www.street-artists.org/~dlakelan
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