La recherche a retourné 52 résultats

par belanger
sam. mars 06, 2021 3:23 am
Forum : Xcas sessions (English)
Sujet : Trying out tableaunoirxcas
Réponses : 3
Vues : 335

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 : 335

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 : 719

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 : 376

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 : 376

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 : 340

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 : 374

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 : 374

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...
par belanger
dim. sept. 13, 2020 8:26 pm
Forum : Xcas - English
Sujet : PDF output
Réponses : 2
Vues : 315

PDF output

I just got back my first Xcas homework from my students. To my surprise, some of them put it in Python mode even though I never mentioned it to them. (Maybe not that surprising; Python is the introductory computer language here.) Some of them didn't know what the ps output was, though. Is there a st...
par belanger
mer. juil. 22, 2020 1:30 am
Forum : Xcas - English
Sujet : Bold page numbers in the index
Réponses : 1
Vues : 577

Bold page numbers in the index

What do bold page numbers mean in the index of the manual?
par belanger
ven. janv. 03, 2020 4:08 pm
Forum : Xcas - English
Sujet : Decade of the 20s and Xcas
Réponses : 4
Vues : 807

Re: Decade of the 20s and Xcas

I've never had trouble with the Xcas interface on 64-bit Linux.

But how did you use Xcas in the classroom?
I only have access to a computer classroom sporadically, but I keep meaning to incorporate Xcas in homeworks.

Jay
par belanger
sam. déc. 14, 2019 9:31 pm
Forum : Xcas - English
Sujet : New functions AddSides(), SubtractSides(), MultiplySides() and DivideSides()
Réponses : 3
Vues : 797

Re: New functions AddSides(), SubtractSides(), MultiplySides() and DivideSides()

These functions seem necessary on Mathematica, but not so much on Xcas. If you add or multiply an equation by a number in Mathematica, then you get an equation plus or times a number; it doesn't seem to get applied to each side separately. eqn = 2*x + 3*y == 5 eqn + 3 returns (2*x + 3*y == 5) + 3 Ad...
par belanger
mer. déc. 11, 2019 11:13 pm
Forum : Xcas - English
Sujet : xcasen.html
Réponses : 2
Vues : 719

Re: xcasen.html

Fantastic, thanks!
It worked for Firefox in both in Linux (Ubuntu) and Android. In both cases, I just went to
about:config
and searched for wasm. It was originally enabled in both Ubuntu and Android.

Thanks,
Jay
par belanger
mer. déc. 11, 2019 5:12 pm
Forum : Xcas - English
Sujet : xcasen.html
Réponses : 2
Vues : 719

xcasen.html

Hi All, When running Xcas in Firefox by going to https://www-fourier.ujf-grenoble.fr/~parisse/xcasen.html it works fine. But when I try to install it locally by downloading http://www-fourier.univ-grenoble-alpes.fr/~parisse/giac/xcashtml.zip unzipping it and opening xcasen.html (even after clearing ...
par belanger
jeu. avr. 11, 2019 11:24 pm
Forum : Xcas - English
Sujet : The CST variable
Réponses : 1
Vues : 584

The CST variable

The CST variable doesn't seem to be working for me. I enter CST:=[diff,["tor",tor],["pgcd",pgcd],["euro",6.55957]] (see https://www-fourier.ujf-grenoble.fr/~parisse/giac/doc/fr/cascmd_fr/cascmd_fr064.html#sec90) and I should get the corresponding menu when I press the cust button, but nothing happen...