Review: Sage beginner’s guide.

Sage beginner’s guide is a book by  Craig Finch, published recently by PACKT publishing. After spending two weeks looking at different aspects of the book, I can say with property that this is an excellent book, an I’ll recommend it for beginners to medium experienced SAGE users. Since this is the first book I review, [...]

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SAGE tip: Series Expansion

Two days ago I was trying to expand in series a lot of functions… so I ask myself, Could it be done in SAGE? It should be possible… but, How? So I ask on google group. Solution by Andrzej Chrzeszczyk sage: var(‘r’); sage: f=2*r/sinh(2*r) sage: f.taylor(r,0,5) 14/45*r^4 – 2/3*r^2 + 1 sage: maxima(f).powerseries(‘r’,0) -4*r*’sum((2^(2*i2-1)-1)*2^(2*i2-1)*bern(2*i2)*r^(2*i2-1)/ (2*i2)!,i2,0,inf) [...]

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SAGE tip: Hiding LaTeX code in the notebook

A quick tip today, thanks to Jason from the google group for the tip. I must admit to be a LaTeX addict, I’ve never used a wysiwyg editor… I do everything in LaTeX code, Reports, Magazine articles, Letters, Scientific articles, Tried once to do a music sheet, Posters, I tried sagetex, and plenty more!… When [...]

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SAGE tip: LaTeX trick in the notebook.

As I’ve mention before, actually I’m dealing with some messy supergravity calculations. Unlike most of my colleges, I don’t use Mathematica but their open source SAGE (applauses). Declaring (weird) Variables Through the calculations I should care about 10 dimensions, with a 5 dimensional restriction parametrized by  five different angles, which I call … thus, naturally [...]

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SAGE tip: Fourier Series Approximation with Interactive mode

After my last post, about Fouries Series, I decided to give a try to the interactive mode of SAGE. What did I do? First I check out the examples worked at the Wiki page. In the section of graphics I got inspired from the post Interactive 2D Plotting by Timothy Clemans and Newton’s Method by [...]

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