UPDATE:
I've managed to get the error:
Setting permissions of DOT_SAGE directory so only you can read and write it.
os.chmod(DOT_SAGE, _desired_mode)\nOSError: [Errno 1]
Operation not permitted: \'/var/www/.sage/
How can I fix it?
--
You received this message because you are subscribed to th
Just installed sage-6.8
>From python program I run the following command:
res =
check_output(["/opt/mathenv/sage-6.8/sage","/opt/mathenv/mathsite/mathsite/scripts/eq_solver.sage","x-5",
"x",'-oo', '1', 'oo', '1', '14'])
But this piece of code gives me the following error:
CalledProc
Why solve(-(21/20)**(12*x) + 120,x,explicit_solutions=True) gives me empty
set?
--
You received this message because you are subscribed to the Google Groups
"sage-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-support+unsubscr...@googleg
I know the Newton method.
My question: is there built-in support in sage and how in general find all
roots? You've got approximate solution, but there is another one.
On Thursday, May 7, 2015 at 12:59:22 PM UTC+3, vdelecroix wrote:
>
> On 06/05/15 14:55, Paul Royik wrote:
>
For example,
x^5+y^5=7
x*sin(y)=1
On Wednesday, May 6, 2015 at 10:08:54 AM UTC+3, jori.ma...@uta.fi wrote:
>
> On Tue, 5 May 2015, Paul Royik wrote:
>
> > How can this be applied to systems?
>
> What kind of systems? Let us define f(x,y):
>
> f(\sqrt{2}, \sqrt[3}) =
How can this be applied to systems?
On Wednesday, May 6, 2015 at 1:28:55 AM UTC+3, Dima Pasechnik wrote:
>
>
>
> On Tuesday, 5 May 2015 20:25:46 UTC+1, Paul Royik wrote:
>>
>> I meant without discontinuous functions.
>> What is the general approach even i
I meant without discontinuous functions.
What is the general approach even in numerical solving of "school"
functions on the interval?
Can sage do that?
On Tuesday, May 5, 2015 at 9:53:22 PM UTC+3, Dima Pasechnik wrote:
>
> This is an overtly optimistic point of view that find_root can solve
>
introduction on solving equations in sage here:
> http://www.sagemath.org/doc/tutorial/tour_algebra.html
>
> If you have a specific system of equations in mind, you should share them.
>
>
> On 05/05/2015 08:06 AM, Paul Royik wrote:
>
> How can I find numerical root
How can I find numerical root for the system of equations?
--
You received this message because you are subscribed to the Google Groups
"sage-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-support+unsubscr...@googlegroups.com.
To post to
This is incorrect question.
You are actually asking what is sage for?
I need to solve arbitrary equations, so I don't know ahead of time how it
will look like.
On Sunday, May 3, 2015 at 2:55:14 PM UTC+3, Dominique Laurain wrote:
>
>
> What can be done ?
> It depends of what you are looking for.
is in range [pi/2 - xtol, pi/2 + xtol] for your function
> For me, "find_root_approximate" would have been better name than find_root
>
> On Sunday, 3 May 2015 00:50:55 UTC+2, Paul Royik wrote:
>>
>> Don't know why but find_root(x*tan(x), -1, 5) gives me 1.570796 which is
>>
Don't know why but find_root(x*tan(x), -1, 5) gives me 1.570796 which is
incorrect, since it is pi/2, the value at which tangent doesn't exist.
--
You received this message because you are subscribed to the Google Groups
"sage-support" group.
To unsubscribe from this group and stop receiving em
Thank you!
On Friday, February 27, 2015 at 5:41:07 PM UTC+2, vdelecroix wrote:
>
> Here is one way... not sure it is the best
>
> sage: eq1 = sqrt(cos(4*x)+1)
> sage: eq2 = eq1.simplify_trig()
> sage: eq2
> sqrt(8*cos(x)^4 - 8*cos(x)^2 + 2)
>
> The next step consists in factoring what is insi
OK. Let x is real.
How to rewrite sqrt(cos(4x)+1) into sqrt(2)abs(cos(2x))?
On Friday, February 27, 2015 at 3:36:59 PM UTC+2, Simon King wrote:
>
> Hi Paul,
>
> On 2015-02-27, Paul Royik > wrote:
> > What is the way to consistently simplify square roots of square
What is the way to consistently simplify square roots of squares?
Examples:
sqrt((x+1)^2) - > x+1
sqrt(cos(4*x)+1) -> sqrt(2)cos(2x)
--
You received this message because you are subscribed to the Google Groups
"sage-support" group.
To unsubscribe from this group and stop receiving emails from
h.org/packages/upstream/sympy/index.html
>
> Note that it will be update to 0.7.6 with
>
> http://trac.sagemath.org/ticket/17644
>
> Vincent
>
> 2015-02-23 16:59 UTC+01:00, Paul Royik >:
>
> > Hello.
> >
> >
> > from sympy import asec
Hello.
from sympy import asec
On Monday, February 23, 2015 at 4:20:31 PM UTC+2, vdelecroix wrote:
>
> Hello,
>
> Which command did you tried exactly? "import sympy" works for me.
>
> Vincent
>
> 2015-02-23 14:46 UTC+01:00, Paul Royik >:
>
> > He
Hello.
I'm trying to use sympy insinde sage.
But I've got following error: ImportError: cannot import name asec
As far as I know older versions of sympy didn't have asec class.
So, what version of sympy does sage uses?
I use sage 6.5
--
You received this message because you are subscribed to th
18 matches
Mail list logo
