This will bomb because numerical_integral doesn't allow vars for the
limits of integration:
Y(t)=2500+numerical_integral(S(u)-R(u),0,t)[0]
I tried Y(t)=2500+numerical_integral(S(u)-R(u),0,x).substitute(x=t)[0]
and
Y(t) = ( 2500+numerical_integral(S(u)-R(u),0,x)[0]).substitu
This will bomb because numerical_integral doesn't allow vars for the
limits of integration:
Y(t)=2500+numerical_integral(S(u)-R(u),0,t)
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A student in my class can get very far in Sage without needing to
declare variables
sage: f(u) = u^2
sage: f(4)
16
sage: integrate(sin(u),u,2,11)
cos(2) - cos(11)
sage: diff(u*y,u)
y
sage: def g(n):
: return n*n
:
sage: g(9)
81
When must you absolutely need to declare vars? My e
Should I think of a Sage session as an IPython session with a lot of
math related modules loaded into the namespace?
(i.e. I assume in the Sage shell init file somewhere there are lots of
lines like this?
from some_math_stuff import * ?? )
If yes, how can Sa
I solved the problem myself. That error has to do with the path to
firefox being messed up under the $HOME/.gconf directory.
More details here:
http://defindit.com/readme_files/gconfd_http_launch_howto.html
cs
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On Mar 18, 3:08 pm, William Stein wrote:
> Does the sage notebook still work if you directly paste
>
> http://localhost:8000
>
> in the url of your web browser?
Yes.
cs
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I got the following error before and after upgrading to version 3.4
when running
sage -notebook"
"Error showing url: There was an error launching the default action
command associated with this location."
Any idea what this can be or what I should try?
cs
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> What version of sage are you using?
That was it. I was on 3.1.x and when I upgraded to 3.4 it worked.
cs
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On Mar 17, 6:57 pm, Jason Grout wrote:
> The easiest way to do this is to shift-click on the blue "add cell" bar.
> That will bring up the TinyMCE WYSIWYG editor.
When I hover above an input box I do see a blue horizontal bar appear.
When I shiftclick on it I get a new input boxeven aft
How add text *outside* of boxes of different fonts in Sage notebooks?
I've noticed people are able to create notebooks with various fonts,
bolding, etc.
I don't see how they got outside the eval boxes.
cs
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If I'm reading correctly, is the purpose of ">>>" is to denote input
you want ignored during evaluation?
I tried to evaluate a line with ">>>" and it still gave an error
message. So, I'm probably mistaken about something here.
Chris
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Why integrate(sin(t*t),t,0,3).n(X) blows up for (apparently) all X >
0?
cs
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Why can't do integrate( abs( sin(t^2) ), t, 0, 3) ?
Sage just returns the question...
sage: integrate(abs(sin(t*t)),t,0,3)
integrate(abs(sin(t^2)), t, 0, 3)
cs
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