On Mon, 27 Aug 2012 at 07:22AM -0400, David Joyner wrote:You should have included a link to buy the book, to encourage more
> Marshall Hampton and I wrote a book on Differential
> Equations using Sage, and 100% of the royalties go directly
> to the Sage Foundation. It is out now. If you want a 25%
> discount coupon (for your library or holiday gifts:-), just email
> Marshall or me and we can send you the form with the code.
> - David Joyner
> PS There is a draft version of the book here:
royalties to the Sage Foundation. :)
I found this link:
Is the front cover illustration a graph of the heat equation, with
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