Hi all!
This is my 1st message here, so I hope not to do something not
appropriate.
Working through a simple problem, I noticed that Sage fails in
simplifying things like
cos((1/7)*pi) + cos((6/7)*pi)
to zero, which Mathematica does correctly. I have tested it up to the
5.0 beta1
Curiously,
On Tue, Jan 24, 2012 at 4:11 AM, Jesús TC jesu...@gmail.com wrote:
Hi all!
This is my 1st message here, so I hope not to do something not
appropriate.
Working through a simple problem, I noticed that Sage fails in
simplifying things like
cos((1/7)*pi) + cos((6/7)*pi)
to zero, which
Probably that should be implemented inside the trigonometric functions
code itself, instead of in any of the simplify's.
What do you think?
+1
It's indeed annoying that Sage doesn't do this simplification (because
Maxima doesn't).
Though that would be a red herring if we wanted
Hi
In the notebook, what is the difference between Discard quit and
Save quit?
regards
john perry
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On Wed, Jan 25, 2012 at 7:25 AM, kcrisman kcris...@gmail.com wrote:
Probably that should be implemented inside the trigonometric functions
code itself, instead of in any of the simplify's.
What do you think?
+1
It's indeed annoying that Sage doesn't do this simplification (because
On 1/25/12 10:56 AM, john_perry_usm wrote:
Hi
In the notebook, what is the difference between Discard quit and
Save quit?
IIRC, if you have been editing a cell, but have not yet evaluated it, or
if you have edited a text cell but not yet saved it, then Discard will
throw away those
On Wed, Jan 25, 2012 at 10:45 AM, Jason Grout
jason-s...@creativetrax.com wrote:
On 1/25/12 10:56 AM, john_perry_usm wrote:
Hi
In the notebook, what is the difference between Discard quit and
Save quit?
IIRC, if you have been editing a cell, but have not yet evaluated it, or if
you
On Jan 25, 1:58 pm, William Stein wst...@gmail.com wrote:
On Wed, Jan 25, 2012 at 10:45 AM, Jason Grout
jason-s...@creativetrax.com wrote:
On 1/25/12 10:56 AM, john_perry_usm wrote:
Hi
In the notebook, what is the difference between Discard quit and
Save quit?
IIRC, if
On Wed, Jan 25, 2012 at 10:45 AM, Jason Grout
IIRC, if you have been editing a cell, but have not yet evaluated it, or
if
you have edited a text cell but not yet saved it, then Discard will throw
away those changes, and Save will save them. Note that if you evaluate a
cell, it
On 01/25/2012 01:27:11 PM, john_perry_usm wrote:
On Wed, Jan 25, 2012 at 10:45 AM, Jason Grout
IIRC, if you have been editing a cell, but have not yet
evaluated it, or if
you have edited a text cell but not yet saved it, then Discard
will throw
away those changes, and Save will
On 1/25/12 3:27 PM, john_perry_usm wrote:
So it's not a bug. What about a feature request? Discarding even
evaluated cells since the last save would be_really_ useful to me
('twould have saved my bacon a few times). But is that something
infeasible?
No, it's not infeasible. We'd just have
Hi,
I am having issues with creating first and second ordered derivatives
for a function that includes bessel functions.
Psi = lambda r,z: (r*bessel_J(1, g*r))/(ro*bessel_J(1, gro))*cos(k*z)
I tried using derivative(Psi, r)
this is the error I get:
ERROR: An unexpected error occurred while
On Tue, Jan 24, 2012 at 9:58 PM, William Stein wst...@gmail.com wrote:
On Tuesday, January 24, 2012, Ondřej Čertík ondrej.cer...@gmail.com wrote:
On Tue, Jan 24, 2012 at 3:31 PM, Jaap Spies j.sp...@hccnet.nl wrote:
Ondřej Čertík wrote:
Hi,
Hi Ondrej,
I downloaded the latest Sage
On Jan 25, 5:04 pm, Jason Grout jason-s...@creativetrax.com wrote:
On 1/25/12 3:27 PM, john_perry_usm wrote:
So it's not a bug. What about a feature request? Discarding even
evaluated cells since the last save would be_really_ useful to me
('twould have saved my bacon a few times). But
I think it has to do with the lambda function causing this issue.
Correct. Sage can only differentiate symbolic functions. Making
Bessel J functions symbolic is http://trac.sagemath.org/sage_trac/ticket/4102.
You may want to look at http://ask.sagemath.org/question/314/bessel-functions
for
g, ro, and gro, k are constants.
On Jan 25, 6:52 pm, kcrisman kcris...@gmail.com wrote:
I think it has to do with the lambda function causing this issue.
Correct. Sage can only differentiate symbolic functions. Making
Bessel J functions symbolic
How can one create a subgroup of the ideal class group of a number
field by specifying a list of ideals to use as generators? I've tried
using the subgroup commands, with no success. Any help would be much
appreciated.
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To post to this group, send email to sage-support@googlegroups.com
To
On Jan 25, 2012 6:47 PM, kcrisman kcris...@gmail.com wrote:
On Jan 25, 5:04 pm, Jason Grout jason-s...@creativetrax.com wrote:
On 1/25/12 3:27 PM, john_perry_usm wrote:
So it's not a bug. What about a feature request? Discarding even
evaluated cells since the last save would
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