On Wed, 17 Feb 2010 19:44:52 -0800 (PST), "D.C. Ernst" <[email protected]>
wrote:
> If anyone is interested, they are welcome to see (and use) the
> finished product which is linked to from here:
>
> http://ma4140.wikidot.com/sage:sage-lab-1
>
> The lab is meant to be an introduction to Sage for my abstract algebra
> students. If you take a look and notice an error or if you have any
> suggestions, please let me know.
>
Dear Dana,
Thanks for posting this, and I'm happy to hear that your worksheets are
safe. I had a quick look at the intro, which is quite nice. Here are a
few random comments:
* Under "What is Sage": "take" should be "taken"
* one should also avoid using "i" and "I" as variables for the same
obvious reason as for "e"
* just a comment: I never used del(); in fact, I didn't know it existed
before reading your intro (thanks!); I normally just define f to be
the next thing I'm interested in. Actually, I don't know how to get
information about del() in Sage; trying del? is not successful.
* when I get to plot(1/t, ...) I get a NameError because t has not yet
been defined; did you do this on purpose to get them to fix it?
* for "Divisibility of integers", you can also do something like
q, r = 4357.quo_rem(3754)
and get the quotient and the remainder in one go.
* in "Extended gcd", I think saying "*the* values of r and s" might
mislead people into thinking that these values are uniquely
determined; I would drop the "the".
Best,
Alex
--
Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne
-- Australia -- http://www.ms.unimelb.edu.au/~aghitza/
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