Hello everyone
thanks for the help here.
In Mathematica, Reduce[] works like Solve, except that it returns a
Boolean list of possible solutions. I use it to check what
the necessary conditions for thereal solution to work:
MMA Reduce[a*x == b, {x}]
MMA (b == 0 a == 0) || (a != 0 x ==
Hi All!
Shouldn't this discussion better go to sage-devel?
On 22 Aug., 22:01, Dr. David Kirkby david.kir...@onetel.net wrote:
...
http://www.python.org/dev/peps/pep-0006/
Quoting from this source:
In general, only the N-1 release will be under active maintenance at
any time. That is,
Hello everybody
implicit_multiplication is very time-saving, and a much more natural way
to write things. I'd love it to be default.
Wow, implicit_multiplication(True) is *exactly* what I have been looking for.
I have tried it just now, and it is brill.
OK, my question: Now that I know
Hi Robin,
On 23 Aug., 12:58, robin hankin hankin.ro...@gmail.com wrote:
But, if I didn't know it existed, how could I possibly have found it?
(give me a pointer to a FAQ!)
I just tried to find it in the FAQ, but without success.
Anyway. If you know that it is called implicit_multiplication
Hello
thanks for this. I liked the preparser manpage that Simon pointed me to.
Re automatic_names(): why isn't this the default?
Now I know it exists, I think I'll probably use it all the time.
Who uses sage without this option?
Or, more precisely, can anyone give me an example of a way
of
Hi Robin,
On 23 Aug., 13:43, robin hankin hankin.ro...@gmail.com wrote:
Re automatic_names(): why isn't this the default?
Now I know it exists, I think I'll probably use it all the time.
Who uses sage without this option?
I find automatic_names horrible, to say the least! In my opinion,
PS:
On 23 Aug., 12:55, Simon King simon.k...@nuigalway.ie wrote:
...
My impression is that the Sage development process is quite far from
that way of thinking.
... or perhaps it is not so much the way of thinking?
I would expect that Python has a lot more person power than Sage. How
many
Wow, I really didn't expect to open this discussion with that post.
I expect Sage upgrades will slip further down your system admin's priority
list
if they are causing him problems.
Though he's actually quite Sage-friendly, and sounds like he'll do
it. The only issue was
I am really
On Mon, Aug 23, 2010 at 6:54 AM, Simon King simon.k...@nuigalway.ie wrote:
Hi Robin,
On 23 Aug., 13:43, robin hankin hankin.ro...@gmail.com wrote:
Re automatic_names(): why isn't this the default?
Now I know it exists, I think I'll probably use it all the time.
Who uses sage without this
On Mon, Aug 23, 2010 at 9:08 AM, Robert Bradshaw
rober...@math.washington.edu wrote:
On Mon, Aug 23, 2010 at 6:54 AM, Simon King simon.k...@nuigalway.ie wrote:
Hi Robin,
On 23 Aug., 13:43, robin hankin hankin.ro...@gmail.com wrote:
Re automatic_names(): why isn't this the default?
Now I
Although I do most of my sage learning on a Mac, I've been playing around with
using it on an iPad though http://www.sagenb.org/. It works fine if I know
what I want to type but I can't do completion, for example because there isn't
a tab key (I think). Anybody know of a workaround to that?
I had a problem with SAGE on my iPod Touch. Everything worked fine
except for jMol when viewing 3D graphs. jMol requires jre and that is
not installed on Safari. Apparently this is a restriction on the
iTouch, there's no way to install jre for Safari on iTouch. I've seen
it installed on a
On Aug 23, 2:28 pm, A. Jorge Garcia calcp...@aol.com wrote:
I had a problem with SAGE on my iPod Touch. Everything worked fine
except for jMol when viewing 3D graphs. jMol requires jre and that is
not installed on Safari. Apparently this is a restriction on the
iTouch, there's no way to
Hi
thanks for your earlier answers.
I quite often do this:
sage: solve(x^3 + 10*x^2+11*x+8==0,x)
[snip]
Then I realize that the analytic solution is rather complicated.
So I want a numerical approximation.
I tried this:
roots = solve(x^3+10*x^2+11*x+8==0,x)
sage: roots
[x ==
Hi Robert,
On 23 Aug., 18:08, Robert Bradshaw rober...@math.washington.edu
wrote:
... And on the other hand, I can't see how life with Sage would be
any easier if automatic_names was the standard.
Think about someone working through a series of calculus textbook
exercises (mostly
I'm not sure if this helps your situation or not, but if you are
interested in the roots of f(x)=0, then using roots has a much more
predictable behaviour.
So for example:
sage: expr=(x^3+10*x^2+11*x+8)
sage: expr.roots()
snip
sage: expr.roots(ring=RR)
[(-8.86042628425072, 1)]
sage:
Hi,
On 08/23/2010 03:42 PM, robin hankin wrote:
I tried this:
roots = solve(x^3+10*x^2+11*x+8==0,x)
SNIP
The best I can do is
N(roots[1].rhs())
but this is just one at a time. How do I make N() operate on all of roots?
You may like
for r in roots:
print N(r.rhs())
or
yup, I was just alluding to fact that if you use the default viewer
you're
stuck. As you say, you can use Tachyon but then you can't rotate the
3D graphs!
BTW, I know it may sound strange, but I know all about Tachyon as
that's how I
originally discovered SAGE. At the time I was playing
On 8/23/10 1:28 PM, A. Jorge Garcia wrote:
I had a problem with SAGE on my iPod Touch. Everything worked fine
except for jMol when viewing 3D graphs. jMol requires jre and that is
not installed on Safari. Apparently this is a restriction on the iTouch,
there's no way to install jre for Safari
On Sat, 21 Aug 2010 19:12:49 -0700 (PDT), kcrisman kcris...@gmail.com wrote:
Sysadmin has found possible workaround of deleting history of the
browser. This is fine in a lab, but potentially very crippling for
those of us who rely on auto-completion of often-visited sites.
Sysadmin is also
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