[sage-support] sagecell permalink down?

2014-09-22 Thread A. Jorge Garcia
I've been using http://sagecell.sagemath.org a lot in class lately. 

We had a problem today. When we tried to get a permalink nothing happened. 
SAGE worked fine otherwise.

Is there a problem with permalink?

My students like this way of saving their work and storing the link on 
edmodo or on their blogs.

Sincerely,
A. Jorge Garcia
http://shadowfaxrant.blogspot.com
https://www.youtube.com/user/calcpage2009

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[sage-support] Re: lzma file?

2012-05-24 Thread A. Jorge Garcia

>
> Isn't there an archive of older *.lzma files somewhere?
>
>
>> TIA, 
>
> A. Jorge Garcia 
>
> Applied Math and CompSci 
>
> http://shadowfaxrant.blogspot.com 
>
> http://www.youtube.com/calcpage2009
>
>

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[sage-support] alternate lzma files?

2012-05-23 Thread A. Jorge Garcia
Anyone know where I can find older versions of the *.lzma installation 
file? 

The download mirrors all have one version for SAGE-5.0 compiled on 32bit 
Ubuntu 12.04. My problem is I'm trying to install SAGE on 64bit boxes with 
some running 64bit Ubuntu 11.04 and others running 32bit Ubuntu 11.10!

TIA,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

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[sage-support] Re: lzma file?

2012-05-23 Thread A. Jorge Garcia
I just ran the current sage-5.0 lzma file for 32bit Ubuntu 12.04 on my 
64bit box running 64bit Ubuntu 11.04 and got these errors:

alpha@alpha:/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux$ 
sudo ./sage
--
| Sage Version 5.0, Release Date: 2012-05-14 |
| Type notebook() for the GUI, and license() for information.|
--
The Sage installation tree may have moved
(from /var/lib/buildbot/build/sage/arando-1/arando_binary/build/sage-5.0 to 
/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux).
Changing various hardcoded paths...
(Please wait at most a few minutes.)
DO NOT INTERRUPT THIS.
Done resetting paths.
ERROR:root:code for hash md5 was not found.
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 139, in 
globals()[__func_name] = __get_hash(__func_name)
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type %s' % name)
ValueError: unsupported hash type md5
ERROR:root:code for hash sha1 was not found.
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 139, in 
globals()[__func_name] = __get_hash(__func_name)
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type %s' % name)
ValueError: unsupported hash type sha1
ERROR:root:code for hash sha224 was not found.
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 139, in 
globals()[__func_name] = __get_hash(__func_name)
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type %s' % name)
ValueError: unsupported hash type sha224
ERROR:root:code for hash sha256 was not found.
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 139, in 
globals()[__func_name] = __get_hash(__func_name)
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type %s' % name)
ValueError: unsupported hash type sha256
ERROR:root:code for hash sha384 was not found.
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 139, in 
globals()[__func_name] = __get_hash(__func_name)
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type %s' % name)
ValueError: unsupported hash type sha384
ERROR:root:code for hash sha512 was not found.
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 139, in 
globals()[__func_name] = __get_hash(__func_name)
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/hashlib.py",
 
line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type %s' % name)
ValueError: unsupported hash type sha512
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/bin/sage-ipython",
 
line 18, in 
import IPython
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/site-packages/IPython/__init__.py",
 
line 58, in 
__import__(name,glob,loc,[])
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/site-packages/IPython/ipstruct.py",
 
line 17, in 
from IPython.genutils import list2dict2
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/site-packages/IPython/genutils.py",
 
line 28, in 
import subprocess
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/subprocess.py",
 
line 429, in 
import select
ImportError: /lib32/libc.so.6: version `GLIBC_2.15' not found (required by 
/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/lib-dynload/select.so)

What can I do?

TIA,
A. Jorge Garcia

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[sage-support] Re: lzma file?

2012-05-23 Thread A. Jorge Garcia
I get the following error when I run the current sage-5.0 lzma file on a 
64bit box running 32bit Ubuntu 11.10:
shadowfax@shadowfax:/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux$
 
./sage
--
| Sage Version 5.0, Release Date: 2012-05-14 |
| Type notebook() for the GUI, and license() for information.|
--
Traceback (most recent call last):
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/bin/sage-ipython",
 
line 18, in 
import IPython
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/site-packages/IPython/__init__.py",
 
line 58, in 
__import__(name,glob,loc,[])
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/site-packages/IPython/ipstruct.py",
 
line 17, in 
from IPython.genutils import list2dict2
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/site-packages/IPython/genutils.py",
 
line 28, in 
import subprocess
  File 
"/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python/subprocess.py",
 
line 429, in 
import select
ImportError: /lib/i386-linux-gnu/libc.so.6: version `GLIBC_2.15' not found 
(required by 
/usr/local/sage-5.0-linux-32bit-ubuntu_12.04_lts-i686-Linux/local/lib/python2.7/lib-dynload/select.so)

So, I ran "sudo apt-get install ipython" but I still get the same error. 
Then I saw in an Ubuntu forum that installing libssl0.9.8 would help but 
still no joy!

Help!
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009
 

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[sage-support] lzma file?

2012-05-22 Thread A. Jorge Garcia
I'm trying to install a SAGE *.lzma file in my PC Lab running 64bit Ubuntu 
11.04 and 32bit Ubuntu 11.10. The problem is that there's only versions for 
32bit Ubuntu 12.04 available to download. Does anyone know where I can find 
a version that will work in my lab?

FYI, I recently started a similar thread in sage-edu.

TIA,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

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Re: [sage-support] plots in 3d are not published?

2012-01-02 Thread A. Jorge Garcia
LFS  wrote:

Hi - I am a new user of sage, but I very much like the ability to do
(better than) mathematica quality mathematics and 3d plots legally :)
However, when I publish my sage worksheet so that I can link to it and
a non-sage user can view it, the 3d plots are not generated (neither
plot3d nor implicit_plot3d nor plot_vector_field3d). The 2d plots are
generated. (See for example: http://sagenb.org/home/pub/3905/ )
Is there a reason for this? Thanks. Linda

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Is it possible that the second user does not have JRE installed in their 
browser? I think 3D plots use JMOL which depends on Java.
HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009
Sent via DROID on Verizon Wireless

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Re: [sage-support] Jmol on Android tablet

2011-11-26 Thread A. Jorge Garcia
pong  wrote:

Two days ago during Thanksgiving dinner, I tried showing SAGE notebook
to my cousin who has an Android tablet. Well... I then realized that
Jmol (or rather Java runtime environment) is not supported on android
(at least not out of the box)

My questions are:

1) Has someone successfully run Jmol on an Android browser?

There is a youtube clip showing Jmol 12.3 is working on Android:
http://www.youtube.com/watch?v=og-lXFnDU-w


2) If so, what's the best way to make that happen?

Thanks in advance

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On my android phone, I use show(viewer="tachyon") instead of jmol.
HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009
Sent via DROID on Verizon Wireless

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Re: [sage-support] wiki.sagemath.org where fore are thou?

2011-08-09 Thread A. Jorge Garcia
William Stein  wrote:

On Tue, Aug 9, 2011 at 4:35 PM, calcp...@aol.com  wrote:
> Hello ALL:
>
> I was just preparing my new SAGE based Calculus Lab for the Fall. So,
> I was looking at the items in the library on http://www.sagemath.org/
> However, nothing happens when I click on a link that goes to wiki such
> as http://wiki.sagemath.org/ANYTHING! Is the wiki down, is it gone,
> can it be fixed?
>

The wiki was down for about 5 minutes.

> TIA,
> A. Jorge Garcia
> calcp...@aol.com
> Applied Math and CompSci
> http://shadowfaxrant.blogspot.com
> http://www.youtube.com/calcpage2009
>
> --
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> URL: http://www.sagemath.org
>



-- 
William Stein
Professor of Mathematics
University of Washington
http://wstein.org

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Wow, imagine the odds of that! Thanx, A. Jorge Garcia
Thanx,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009
Sent via DROID on Verizon Wireless

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Re: [sage-support] Re: Sage Scripts

2011-04-18 Thread A. Jorge Garcia
I tried VMs years ago (not for SAGE) and I REALLY did not like how many 
resources are needed to run the simplest app.


I tend to run natively now (I use Ubuntu Linux for SAGE). If you are 
stuck with Windows, you may have to increase your RAM. How much RAM are 
you using?


In any case, I would recommend Linux boxes

HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009


-Original Message-
From: Simon King 
To: sage-support 
Sent: Mon, Apr 18, 2011 9:27 am
Subject: [sage-support] Re: Sage Scripts

On 17 Apr., 04:57, nkulmati  wrote:

However, I had a major disappointment. I wrote a short script, and it
is apparently too much for sage/python to handle when I am running a
virtual machine from Win 7. I use process monitor and it goes like
this: when I run my script, both the CPU and RAM usage (in virtual
machine) SHOOT up to 100%, and then swapping begins, after two minutes
or so the CPU falls back to around 0 but the memory never gets
released back from 100%, and my whole ubuntu, the whole virtual
machine, freezes. (While the system monitor still shows steady 100%
usage of memory). I have to restart the VM.


I never worked with a virtual machine in Windows, so, I am not really
an expert. However, I thought it should be possible to use something
like ulimit in order to prevent the VM from freezing (simply because
the application is killed before the VM freezes)?

Cheers,
Simon

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Re: [sage-support] Re: Sequences and Series

2011-03-30 Thread A. Jorge Garcia

Do you mean something like:

#fibonacci
def fib(n):
   if n==0 or n==1:
   return 1
   return fib(n-1)+fib(n-2)

#output sequence
for i in range(10):
   print fib(i)

#output series
sum=0
for i in range(10):
   sum+=fib(i)
print sum

HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009


-Original Message-
From: kcrisman 
To: sage-support 
Sent: Wed, Mar 30, 2011 4:12 pm
Subject: [sage-support] Re: Sequences and Series



On Mar 30, 2:58 pm, ObsessiveMathsFreak
 wrote:

I'm just wondering if there is a canonical (i.e. convienient(i.e.
lazy)) way to define simple sequences and series in sage. In
particular, is there a standard way to define recursive series?

Suppose for example that You wanted to define the series a_n=1/n^2. Is
there a way to do this without writing a for loop?

And moreover, suppose you wanted to define the recursive sequences
a_n=(n^2+2)a_{n-1}. Is there a way to do this automatically?


I think Maxima can do recurrences. 
http://maxima.sourceforge.net/docs/manual/en/maxima_76.html


But this hasn't been added to Sage yet, in the sense of wrapping the
functionality nicely.

http://trac.sagemath.org/sage_trac/ticket/1291

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Re: [sage-support] SAGE cluster?

2011-03-04 Thread A. Jorge Garcia

OK, so IPython uses mpi4py and openmpi?

TIA,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009


-Original Message-
From: Harald Schilly 
To: sage-support@googlegroups.com
Sent: Fri, Mar 4, 2011 7:02 pm
Subject: Re: [sage-support] SAGE cluster?

On Fri, Mar 4, 2011 at 17:17, Calcpage  wrote:

put together our cluster (aka Shadowfax)


I don't know anything about that cluster, what management software does 
it run?

For example, when you update ipython you can submit your engines [1]
to the cluster nodes via the oracle grid engine [2]

[1] still called SGE:
http://ipython.scipy.org/doc/stable/html/parallel/parallel_process.html#using-ipcluster-in-sge-mode
[2] http://www.oracle.com/technetwork/oem/grid-engine-166852.html

I don't know if Sage's documentation about mpi is really working for
you - you can install openmpi as an optional package. But then, you
still have to start your instances and manage them. Also, IPython
provides a python wrapper around mpi via mpi4py [3].

[3] http://mpi4py.scipy.org/

H

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Re: [sage-support] SAGE cluster?

2011-03-02 Thread A. Jorge Garcia

http://trac.sagemath.org/sage_trac/ticket/8537


Thanx for this ticket info.  It looks like this MPI pkg is now 
installable as a special pkg?  How do I do that?  How do I use openMPI 
and mpi4py in SAGE after the install?


TIA,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

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Re: [sage-support] sagenb.org server(s)

2011-02-07 Thread A. Jorge Garcia

Nevertheless, I've found remarkably few (given my 2-for-2 batting
average) messages like this in the list archives over the last year.
Is this not a problem for others, just me doing something wrong?


I have had a lot of lag on the sage servers this past semester.  
However, I cannot say if its a problem in my school's network which is 
notorious for lag  So, I switched to using the binaries for Ubuntu. 
 I gave every one of my students a copy of the binary and we are using 
that instead this semester.  So far, all is going well!


HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

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Re: [sage-support] sage binaries

2011-01-25 Thread A. Jorge Garcia





From: Robert Bradshaw 
On Tue, Jan 25, 2011 at 4:17 PM, calcp...@aol.com  

wrote:

Hello All!

First of all, thanx for all the great work you do making SAGE such a
great resource.  My students and I love it!

I've used online SAGE servers and SAGE live Linux CDs over the years
in class and at conferences.  I recently started using the 32bit SAGE
binary for Ubuntu 10.04 Desktop and love it.

My question is, can I use such a binary to set up a dedicated SAGE
server for my students?



Yes, that binary should have everything in it to run a server. (In
fact, if you're using the notebook interface, you're already doing it,
though setting it up for more than local access requires a bit more
work.)
- Robert


OK, so what steps are required to get the binary to act as an online 
SAGE server for my students on and off campus?  I'm going to be setting 
up an ftp/sftp server for my AP-CompSci classes once I get some new 
server hardware.  I'd like to set up a SAGE server for my intro-CompSci 
students as well as my CalculusResearchLab students.


TIA,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

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[sage-support] Happy New Year 2011!!!

2011-01-01 Thread A. Jorge Garcia
Happy New Year all!
Please enjoy my YouTubes and BlogSpots!

HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

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Re: [sage-support] What's easiest way to get Sage running on Windows for non-techie students?

2010-10-11 Thread A. Jorge Garcia

Depending on how technical you are, the easiest way by far is to set
up a Sage server for them yourself, and then all they need on their
windows boxes is a web browser and a password.


I tried this, and I'm pretty techie, but found it was a huge hassle 
compared with just letting my students make an account on one of the 
SAGE servers online.  I have a lot of other 
hardware/software/firmware/networking issues to deal with, this way I 
have one less headache!


HTH,
A. Jorge Garcia
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

Teacher & Professor
Applied Mathematics, Physics & Computer Science
Baldwin Senior High School & Nassau Community College

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Re: [sage-support] Octave and SAGE

2010-08-26 Thread A. Jorge Garcia

Octave is not bundled with Sage.  If you have Octave already
installed, then Sage can interface with it via pexpect.


OOPs, I think I got confused since one of the latest CD versions of 
SAGE included Octave on the desktop.


Sorry,
A. Jorge Garcia
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

Teacher & Professor
Applied Mathematics, Physics & Computer Science
Baldwin Senior High School & Nassau Community College


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Re: [sage-support] tab on an iPad

2010-08-23 Thread A. Jorge Garcia
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 with 3D ray 
tracers like
Tachyon and povray.  I found a video demoing dSAGE running a povray 
plot and was
instantly hooked on SAGE.  I really should figure out how to distribute 
SAGE

jobs over a cluster....

Thanx,
A. Jorge Garcia
http://shadowfaxrant.blogspot.com

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Sent from my Verizon Wireless mobile phone

--Original Message--
From: kcrisman 
To: "sage-support" 
Date: Mon, Aug 23, 12:04 PM -0700
Subject: [sage-support] Re: tab on an iPad



On Aug 23, 2:28 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 iTouch.  I've seen
it installed on a MacBook Pro, however.

If you don't do 3D graphs, I think you're fine.  I just don't know if
the iPad has the same restrictions as the iTouch



By the way, 3D graphs *will* work without Java, but you would need to
view them statically.

sage: var('y')
sage: plot3d(x^2 + y^2, (x,-2,2), (y,-2,2),viewer='tachyon')

This is unfortunately buried in the documentation, and not in
sage: plot3d?

- kcrisman

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Re: [sage-support] tab on an iPad

2010-08-23 Thread A. Jorge Garcia
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 MacBook Pro, however.


If you don't do 3D graphs, I think you're fine.  I just don't know if 
the iPad has the same restrictions as the iTouch....


HTH,
A. Jorge Garcia
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009

Teacher & Professor
Applied Mathematics, Physics & Computer Science
Baldwin Senior High School & Nassau Community College


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