Thanks. Now please post all commands from start of Sage until this happens.
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Traceback (most recent call last):omega = 2*pi*f
File "", line 1, in
File "/tmp/tmpZ_1fAb/___code___.py", line 11, in
pb = plot(df(r,c,omega,t),(t,_sage_const_0 ,_sage_const_p005
),rgbcolor=('#008000'))
File "/usr/lib/python2.7/dist-packages/sage/misc/decorators.py", line 55
There is no way around you getting a recent Sage
(or using the cloud) and posting a full session log.
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I run the sws as sage -n and they is the same error. I think the t variable
is already declared and even adding var... That doesn't work, I guess it an
old sagenb and there are modification in recent sage.
Traceback (most recent call last):omega = 2*pi*f
File "", line 1, in
File "/
On Friday, June 30, 2017 at 9:21:18 AM UTC+2, HG wrote:
>
> http://arachnoid.com/sage/differential1.html
>
> ValueError: Variable 't' not found
>
>
If you look at that arachnoid webpage you'll find this:
var('r c t')
Without defining a variable you cannot use it, even if it's bound.
Regards,
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