On Sep 26, 2009, at 3:45 PM, lutusp wrote:
>
> I 'm in the process of writing a Sage tutorial at http://
> arachnoid.com/sage.
> I'm about about halfway through the project, the completed pages may
> be a useful resource, and I wanted to (1) announce this, and (2) ask
> for comments from people willing to read the articles.
Very cool, we can always use more quality documentation!
Some comments
1) Several places you have
sage: var('a b c d')
(a b c d)
There should be commas between the variables in the output.
2) It'd be nice to disable the double-click for definition in the
input/output cells, as it makes it hard to hilight stuff (and the
hover-then-copy isn't working for me).
3) "In computer math, operations inside parentheses are performed
before operations outside parentheses. " Actually, this is the
general rule for non-computer math as well.
4) "Invalid syntax" means you typed something that it wasn't able to
understand. (This could be many different things...)
5) "The reason Sage didn't automatically provide a numerical result
has to do with something called "complex numbers" (even though the
argument is explicitly numerical)."
Well, actually it's because the square root couldn't be represented
exactly. Another more colloquial way to say that, which would flow
nice, is that it doesn't know how many digits you want.
6) N(pi),1000) -> N(pi, 1000)
Very nice examples in section 4 & 5.
- Robert
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