ing, I would expect either an error or to return 'infinity', or to
report that the integral is divergent.
best wishes
Robin
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report attached
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sage: o
100
sage:
Is this a bug? Can anyone advise? I am very very very reluctant to adopt
the ghastly ** notation.
best wishes
Robin
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)), and so
on.
In sage I can type sin? or sin?? but these don't give me the whole corpus
of known information.
What is the sage equivalent to FunctionAdvisor()?
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NameError: name 'z38' is not defined
sage:
How do I make z38 equal to 3?
thanks
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about solving a single equation,
see the documentation for the single-expression solve()
Where can I find this documentation online?
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== 1/4*pi + pi*z219]
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:54 AM, Michael Orlitzky mich...@orlitzky.com wrote:
On 06/11/2013 04:43 PM, robin hankin wrote:
hello. Sage 5.9:
sage: solve(sin(x)/cos(x)==1,x,to_poly_solve=force)
[]
I find this unexpected because pi/4 is a solution, and sage seems to
indicate that there are no solutions.
Sage can
/2013 07:26 PM, robin hankin wrote:
OK Michael, thanks for this.
But my problem was
solve(sin(x)/cos(x)==1,x,to_poly_solve=force)
returns an empty solution set, implying that there are no solutions
when in fact there are. Surely this is misleading?
Worthy of a bug report? IDK
I didn't
as though only the first line is executed when
I hit shift-return. This is almost repeatable for me; sometimes it
works as expected but I can't see why. The only way I can execute all
the lines reliably is to cut-and-paste them one at a time into
successive cells.
Can anyone advise?
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)
---
TypeError
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that
can go in my paper.
Can anyone advise?
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(), but these options only produce very poor-quality jpeg or
png: unacceptable for publication-quality images.
I would like a nice sharp pdf or eps or other nice vectorized output that
can go in my paper.
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sage do what I want?
thanks
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this solution is fine for me.
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and beta? gives the help page. But
it is potentially very confusing to be given an answer in terms of a
function (B) which
(apparently) is not documented. Couldn't sage somehow redirect the user
to the help page for beta, when they type B??
Best wishes
Robin
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) is not consistent with my assumption()?
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wow, thank you. I would not have thought of using list comprehensions here.
Is there a way to do
[s for s in sol if all of the assumptions are satisfied]
thanks
Robin
On Fri, Dec 9, 2011 at 11:48 AM, achrzesz achrz...@wp.pl wrote:
On Dec 8, 9:36 pm, robin hankin hankin.ro...@gmail.com
On Mon, Sep 5, 2011 at 4:30 PM, Justin C. Walker jus...@mac.com wrote:
Hi, Robin,
On Sep 4, 2011, at 16:10 , robin hankin wrote:
Hello Justin
thanks for this.
(I'm a linux user but currently getting to know macosx).
If you use linux, you aren't that far from (command-line) Mac OS X
, 2011, at 19:31 , robin hankin wrote:
Hi.
sage 4.7.1, macosx 10.6.8, firefox 5.0.
When I use the sage notebook the following happens:
var('x')
integral(exp(x),x)
Traceback (click to the left of this block for traceback)
...
RuntimeError: ECL says: THROW: The catch MACSYMA-QUIT
...@mac.com wrote:
On Sep 4, 2011, at 14:02 , robin hankin wrote:
Hi.
thanks for this.
@justin: how do I run sage from the command line? I use the
precompiled version and am unsure how commandline sage works.
You open a Terminal window, first, and make sure that window has focus
Hi.
sage 4.7.1, macosx 10.6.8, firefox 5.0.
When I use the sage notebook the following happens:
var('x')
integral(exp(x),x)
Traceback (click to the left of this block for traceback)
...
RuntimeError: ECL says: THROW: The catch MACSYMA-QUIT is undefined.
What's the deal?
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()
[complicated expression deleted].
to give zero.
How do I tell sage to simplify this expression?
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Hi.
What's going on here?
sage
y=(x^2)*exp(x)/(1+exp(x))^2
integrate(y,(x,-infinity,infinity))
0
/sage
Sage gives me zero here.
But 'y' is strictly positive everywhere, and I happen to know
that the analytic answer is pi^2/3.
What's going on here?
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Hi.
When I type
integrate(dirac_delta(x),x,-1,1)
I expected to get 1, as the documentation clearly implies.
But instead I get a symbolic answer.
How do I make sage return 1?
cheers
Robin
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'a'?
Suppose someone gave me 'c'. How can I instruct sage to simplify
it until it gives me 'a'?
One more question: I learned a lot from the pointer you gave me to the Sage
reference manual. Is it available as a PDF somewhere?
thanks again
robin
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hankin.ro
to whatever precision is
necessary) that they are the same root of that poly.
John Cremona
On Jul 5, 11:38 pm, robin hankin hankin.ro...@gmail.com wrote:
Hi. I am having difficulty using sage to manipulate surds.
Consider:
a = 1 + sqrt(2) + sqrt(3)
b= (a^2).expand()
c = sqrt(b)
Then 'y
what I want.
How do I make sage recognize that a=c, other than using n()?
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/11 6:20 PM, robin hankin wrote:
[apologies if this is a resend]
Hi. I am having difficulty using sage to manipulate square roots.
Consider:
a = 1 + sqrt(2) + sqrt(3)
b= (a^2).expand()
c = sqrt(b)
Then 'y' should be equal to 'a'.
I get:
sage: a = 1 + sqrt(2) + sqrt(3)
sage: b= (a^2
recognize that a=c, other than using n()?
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. the rationals. So how come
the polynomial
has coefficients which are not rational?
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/sage/doc/common/builder.py':
[Errno 2] No such file or directory
le112:~/Download/sage-4.5.3%
On Fri, Sep 17, 2010 at 12:08 AM, Dan Drake dr...@kaist.edu wrote:
On Thu, 16 Sep 2010 at 07:43PM +0100, robin hankin wrote:
I did try to compile my own, but ran in to utter dependency hell.
The Sage
-- 887 raise RuntimeError, msg
888
889 if self.__use_workspace_cache and self.__make_workspace:
RuntimeError: Unable to start gap
Error importing ipy_profile_sage - perhaps you should run %upgrade?
WARNING: Loading of ipy_profile_sage failed.
sage:
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/aba48495d9c09e03/f25d062b6764492f
In that case it was somehow caused by an upgrade after installing the
binary. One option would be to install a source version.
-M. Hampton
On Sep 16, 8:04 am, robin hankin hankin.ro...@gmail.com wrote:
Hi. suse 11.3, trying to work with sage 4.5.3
I get various
/a)
best wishes
rksh
On Fri, Aug 20, 2010 at 1:14 AM, kcrisman kcris...@gmail.com wrote:
On Aug 19, 5:39 pm, robin hankin hankin.ro...@gmail.com wrote:
Hello Simon
thanks for this. One problem
with the solution you mention is that I can't do the
general case. What I need is the sage
implicit_multiplication() exists,
I can search for it and get documentation about it.
But, if I didn't know it existed, how could I possibly have found it?
(give me a pointer to a FAQ!)
best wishes
rksh
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of working with sage that this option will break? I'm hoping
to understand why you expert sage users chose the default
as you did.
best wishes
Robin
On Mon, Aug 23, 2010 at 12:07 PM, Simon King simon.k...@nuigalway.ie wrote:
Hi Robin,
On 23 Aug., 12:58, robin hankin hankin.ro...@gmail.com
/3) -
10/3]
sage: N(roots)
but this returns an error (too many values to unpack).
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?
Or is there a much neater way of accomplishing the same thing?
cheers
rksh
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() returns empty.
What am I missing?
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., 22:41, robin hankin hankin.ro...@gmail.com wrote:
sagesolve([a*b==15*I-5,a*conjugate(b)==-13*I+9],[a,b])
[]
So, from the first two lines I know that a=2+I, b=1+7I should
be a solution to the system in the third, yet solve() returns empty.
Admittedly I am no expert for symbolics, and I
using the VirtualBox software, wait
for the virtual machine to boot up, then type notebook at the prompt.
However, the VM box gives me an error: FATAL: No bootable medium found!
System halted.
I don't know how to fix this.
Anyone got any suggestions?
thanks in advance
Robin
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again
Robin
On Sat, Jul 10, 2010 at 7:16 AM, William Stein wst...@gmail.com wrote:
On Sat, Jul 10, 2010 at 8:09 AM, robin hankin hankin.ro...@gmail.com wrote:
Hi
I am trying to install Sage on windows 7
and have installed Oracle VM Virtual Box;
the window is open right now. I have downloaded
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