La recherche a retourné 59 résultats

par belanger
mar. août 22, 2023 1:53 am
Forum : Bugs
Sujet : dh_clean compatibility levels
Réponses : 1
Vues : 1945

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:...
par belanger
lun. nov. 21, 2022 3:45 am
Forum : Bugs
Sujet : Bug or my mistake?
Réponses : 5
Vues : 1992

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
par belanger
ven. oct. 28, 2022 7:26 pm
Forum : Xcas - English
Sujet : Handling big numbers?
Réponses : 5
Vues : 980

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 ...
par belanger
sam. avr. 16, 2022 11:21 pm
Forum : Annonces
Sujet : 1.9.0
Réponses : 10
Vues : 9202

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!
par belanger
sam. oct. 30, 2021 10:24 pm
Forum : Xcas - English
Sujet : Truncated output
Réponses : 4
Vues : 2257

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!
par belanger
ven. oct. 29, 2021 5:15 pm
Forum : Xcas - English
Sujet : Truncated output
Réponses : 4
Vues : 2257

Re: Truncated output

I think the LaTeX->PDF->Print would work for me, but I'm not sure about my students.
par belanger
mer. oct. 27, 2021 11:22 pm
Forum : Xcas - English
Sujet : Truncated output
Réponses : 4
Vues : 2257

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...
par belanger
sam. mars 06, 2021 3:23 am
Forum : Xcas sessions (English)
Sujet : Trying out tableaunoirxcas
Réponses : 3
Vues : 4376

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...
par belanger
ven. mars 05, 2021 5:28 am
Forum : Xcas sessions (English)
Sujet : Trying out tableaunoirxcas
Réponses : 3
Vues : 4376

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&...
par belanger
mar. févr. 23, 2021 2:07 am
Forum : Xcas - English
Sujet : tableaunoirxcas
Réponses : 0
Vues : 2023

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...
par belanger
ven. déc. 18, 2020 4:04 am
Forum : Xcas - English
Sujet : sample and distributions
Réponses : 2
Vues : 2064

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).
par belanger
jeu. déc. 17, 2020 11:56 pm
Forum : Xcas - English
Sujet : sample and distributions
Réponses : 2
Vues : 2064

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...
par belanger
sam. oct. 24, 2020 3:42 pm
Forum : Xcas - English
Sujet : Odd result for the euler_lagrange command
Réponses : 0
Vues : 1655

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(...
par belanger
mar. sept. 15, 2020 5:16 pm
Forum : Xcas - English
Sujet : user_operator
Réponses : 3
Vues : 2234

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...
par belanger
mar. sept. 15, 2020 3:33 am
Forum : Xcas - English
Sujet : user_operator
Réponses : 3
Vues : 2234

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...