Hi again, thanks Marius and Thomas, after getting some sleep its also not that confusing anymore.. ;-) On Fri, Dec 28, 2007 at 06:38:41AM +0100, Thomas Themel wrote:
Hi, Marius Kintel (kintel@sim.no) wrote on 2007-12-28:
Exactly how such software packages solve differential equations numerically, I don't know, but I guess you might have to specify the equation on some standard form for differential equations, not in form of an integral using it's own partial result.
To solve ordinary differential equations numerically, you usually have to get them to a form where the derivatives are explicitly computed from the "current" values. For your equation, that simply means differentiating with respect to time so that you have
$\frac {dQ}{dt} = \left(\frac{U-\frac{Q}{C}}{R}\right)$ [..]
oh yes, thanks - it's also _much_ easier to read now.. ;-) yours, - clifford -- A: No. Q: Should I include quotations after my reply?