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- mar. août 22, 2023 1:53 am
- Forum : Bugs
- Sujet : dh_clean compatibility levels
- Réponses : 1
- Vues : 2332
dh_clean compatibility levels
This isn't really a bug, but I wasn't sure where to put it and thought it might be worth mentioning. I was just compiling giac on a new computer with Debian 12. When I first tried to create a deb file with mkdebian, I got the error, with both the latest stable and latest unstable versions, dh_clean:...
- lun. nov. 21, 2022 3:45 am
- Forum : Bugs
- Sujet : Bug or my mistake?
- Réponses : 5
- Vues : 2909
Re: Bug or my mistake?
Also, it doesn't integrate dy/dt back to y if it is entered as
diff(y(t),t).
If you enter
eq1 := diff(y(t),t,1)
then again
int(eq1,t)
returns undef.
Oddly, perhaps,
diff(y(t),t,1)
returns
diff(y(t),t,1)
I expected
diff(y(t),t)
Jay
diff(y(t),t).
If you enter
eq1 := diff(y(t),t,1)
then again
int(eq1,t)
returns undef.
Oddly, perhaps,
diff(y(t),t,1)
returns
diff(y(t),t,1)
I expected
diff(y(t),t)
Jay
- ven. oct. 28, 2022 7:26 pm
- Forum : Xcas - English
- Sujet : Handling big numbers?
- Réponses : 5
- Vues : 1396
Re: Handling big numbers?
Another question: I want to know if the square root (or, if possible, any n'th root) of a large integer is an integer, how do I do this? (in other words, I'm not interested in the root itself, only in knowing whether it's integer.) I'm sure there's a good reason this isn't a good solution, but the ...
Re: 1.9.0
That's exciting!
Does the 2.0 release have any meaning other than a number bump?
Regardless, it's cool and looks good!
Does the 2.0 release have any meaning other than a number bump?
Regardless, it's cool and looks good!
- sam. oct. 30, 2021 10:24 pm
- Forum : Xcas - English
- Sujet : Truncated output
- Réponses : 4
- Vues : 2669
Re: Truncated output
The IT department will install what I need, but it won't be installed until next school year. Which will be fine. Thanks!
- ven. oct. 29, 2021 5:15 pm
- Forum : Xcas - English
- Sujet : Truncated output
- Réponses : 4
- Vues : 2669
Re: Truncated output
I think the LaTeX->PDF->Print would work for me, but I'm not sure about my students.
- mer. oct. 27, 2021 11:22 pm
- Forum : Xcas - English
- Sujet : Truncated output
- Réponses : 4
- Vues : 2669
Truncated output
Xcas is installed on my university's computers (they use a Windows Thin Client), and printing from there cuts off part of the session. For example, I've attached the print result of a small session (winsession.ps). I use Ubuntu, not Windows, so I tried it on my computer. This time, the session was t...
- sam. mars 06, 2021 3:23 am
- Forum : Xcas sessions (English)
- Sujet : Trying out tableaunoirxcas
- Réponses : 3
- Vues : 8276
Re: Trying out tableaunoirxcas
The magnets probably have a white background because I use the "switch to whiteboard" option; it somehow changed to white on black when I pushed the "Forum" button. This blackboard covered something I wanted to show my advanced calculus class, I thought it'd be fun to try it on tableaunoirxcas. It w...
- ven. mars 05, 2021 5:28 am
- Forum : Xcas sessions (English)
- Sujet : Trying out tableaunoirxcas
- Réponses : 3
- Vues : 8276
Trying out tableaunoirxcas
I can get tableaunoirxcas to work, but it looks as if the Xcas magnets get messed up when I post the url. I'll figure it out.... https://www-fourier.univ-grenoble-alpes.fr/%7eparisse/tableauen.html#python=0&radian=1&width=12600&height=800&00840004npsr&000d00S2GwJpKqMoLnMq&000g00Q2IvKpLpJpLqKpMoLoMn&...
- mar. févr. 23, 2021 2:07 am
- Forum : Xcas - English
- Sujet : tableaunoirxcas
- Réponses : 0
- Vues : 2640
tableaunoirxcas
(I'm not sure if this is the right subforum to post this, but here goes...) In the index_en.html file that comes with Tableaunoirxcas, the code that actually saves the session (in the "My Board" part of the menu) is missing. It is there in index.html, so I can get it working with a cut-and-paste, b...
- ven. déc. 18, 2020 4:04 am
- Forum : Xcas - English
- Sujet : sample and distributions
- Réponses : 2
- Vues : 2700
Re: sample and distributions
Never mind, I guess, Everything works fine without the eval(...,0) there (and I'm a bit surprised it worked in that one case with the eval).
- jeu. déc. 17, 2020 11:56 pm
- Forum : Xcas - English
- Sujet : sample and distributions
- Réponses : 2
- Vues : 2700
sample and distributions
I guess the sample command can take a distribution as the first argument. The manual does something like In: X:=randvar(normal,stddev=9.5):; Y:=randvar(normal,stddev=1.5):; then In: sample(eval(X/Y,0),10): and it works fine. But In: sample(eval(X,0),10) gives a bad argument error, while In: sample(e...
- sam. oct. 24, 2020 3:42 pm
- Forum : Xcas - English
- Sujet : Odd result for the euler_lagrange command
- Réponses : 0
- Vues : 2253
Odd result for the euler_lagrange command
Hi All, The euler_lagrange command gives an odd result when the input is a variable that evaluates to an expression rather than the expression itself. For example: >> f := x^2*diff(y(x),x)^2 + y^2 x^2*(diff(y(x),x))^2+y^2 >> euler_lagrange(f) [-x^2*(diff((y(t))(x),x))^2-(y(t))^2=K_0,2*x^2*diff(diff(...
- mar. sept. 15, 2020 5:16 pm
- Forum : Xcas - English
- Sujet : user_operator
- Réponses : 3
- Vues : 2703
Re: user_operator
Either it's not working, or perhaps my brain not's working. Sorry if I'm being dense. Delete doesn't seem to do anything; if an operator was previously defined, it stays defined, and if the symbol was a variable given a value, it keeps that value and no new operator is defined. See the session below...
- mar. sept. 15, 2020 3:33 am
- Forum : Xcas - English
- Sujet : user_operator
- Réponses : 3
- Vues : 2703
user_operator
For the user_operator command, what are Binary and Delete for? From playing with it, it looks as if the Binary option means define the operator, but why would you use the command if you aren't defining an operator? And Delete seems to mean don't define the operator and ignore the whole user_operator...