On Dec 20, 2007 1:03 PM, John Cremona <[EMAIL PROTECTED]> wrote: > > I have never been a fan of the "arrow" view of vectors, as (to my > mind) it causes a lot of confusion when the students move on to "real" > multidimensional linear algebra. What I would expect to see if I > asked for a plot of the (real) vector (2,1) would be a big fat dot at > the appropriate position in the plane. > > Aren't arrow-type vectors another type of object altogether? Since > they have a start and an end point, where you are taking the start > point to be the origin? Personally I think those should be given > another name altogether! >
Are you confusing the notion of n-tuple and vector? The definition of "vector" in pretty much any dictionary is "a quantity having a direction and magnitude". Thus it definitely makes sense to plot a vector by giving an arrow. -- Willam --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
