> Normally I can differentiate analytically to get the slope and
> inflection points. While trying to have a quick look into these points
> with numerical differentiation I noticed that mpmath is giving me
> values quite distant from the ones obtained with analytical formulas.
I think there's a mi
Hello,
At first mpmath seemed to give me right results for numerical
differentiation of some transcendental equations.
These functions are related to the natural vibration modes of a fixed-
fixed beam.
Normally I can differentiate analytically to get the slope and
inflection points. While trying
Hi Mr. Widmann and Mr Braun,
Thanks for your responses, sorry my reply has been slow. I'll try out your
distro during the week Mr. Widmann, I ran out of cap last month :S. The
Read Me I was referring to was both of the Read Me's on the Sage download
site. I can't remember which one I'm afraid.
As
sage: x0,x1,x2,x3,x4,x5,x6,x7,x8,x9 = var('x0,x1,x2,x3,x4,x5,x6,x7,x8,x9')
sage: S = 1*x1 + 2*x3 + 3*x4 + 4*x5 + 5*x7 + 6*x9
sage: S.variables()
(x1, x3, x4, x5, x7, x9)
By the way :
sage: x=var('x')
sage: S=sin(x)**2+cos(x)**2
sage: S.variables()
(x,)
sage: S.simplify_trig().variables()
()
th
On 12/01/2011 10:46 AM, Santanu Sarkar wrote:
> Hello,
> Let S be a symbolic expression of a certain number of variables taken
> from a particular set of variables. How do I find out the list of the
> distinct variables that S depends on?
> Suppose {x0,x1,x2,x3,x4,x5,x6,x7,x8,x9} is a set of unknow
On Thursday, December 1, 2011 1:39:35 PM UTC, emil wrote:
>
> The command is:
> sage -notebook secure=True
> this will start an https server
> (You will have to use Ctr C or similar to stop the running server in
> the VM to get a command prompt)
>
For the record, the VirtualBox vm image automatica
Hello,
Let S be a symbolic expression of a certain number of variables taken
from a particular set of variables. How do I find out the list of the
distinct variables that S depends on?
Suppose {x0,x1,x2,x3,x4,x5,x6,x7,x8,x9} is a set of unknowns and S =
x1 + x3*x4 + x5*x7*x9. I need to find the sub
Good. I did see that the VirtualBox networking is set to NAT
That must be the default setting.
Thanks to you all for the helpful suggestions.
On Dec 1, 4:05 am, Volker Braun wrote:
> Short answer: This is safe as long as you keep the networking settings
> ("NAT") in the virtual machine the way t
Just some additional info:
> The login is automatic as admin and no password. The worksheets look good
> and everything is much faster on the local installation; however,
> I prefer not to use it much until I get some advice. I have not been able
> to figure out how to start the notebook serve
Short answer: This is safe as long as you keep the networking settings
("NAT") in the virtual machine the way they are set up.
Only the host computer can access the virtual machine if the networking is
set to NAT, so just like ssh port forwarding no other computer on the
network can access the
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