On Fri, 14 Dec 2012, Kent A. Reed wrote: > Date: Fri, 14 Dec 2012 22:41:54 -0500 > From: Kent A. Reed <kentallanr...@gmail.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] Question on the loadable module ddt > > On 12/14/2012 9:57 PM, Gene Heskett wrote: >> Greetings; >> >> I never got far enough in math to know what a 'derivative' is. Does anyone >> have a URL where I could learn a bit about this function? >> >> Thanks. >> >> Cheers, Gene > Actually, the wikipedia article isn't bad: > http://en.wikipedia.org/wiki/Derivative > > If it gets too mathematical too quickly, just remember the geometric > interpretation: for a smooth continuous curve represented by a function > f(x), the slope of the curve at a point x=p is the derivative of the > function df/dx evaluated at x=p (ignoring all the messy bits that > require the mathematics to explain). > > Regards, > Kent
And d/dt specifically: http://en.wikipedia.org/wiki/Time_derivative Peter Wallace ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
