La recherche a retourné 608 résultats

par compsystems
dim. août 17, 2025 2:25 pm
Forum : Xcas - English
Sujet : distributive law in a sum and simplify cmd
Réponses : 0
Vues : 176

distributive law in a sum and simplify cmd

Hello, I am unable to apply the distributive law in the following expression autosimplify(0) simplify(–1*(2+x+3)) => x*–1+5*–1 // It's fine, although it would look better if the numerical coefficients were placed on the left. -1*x*+5*–1 autosimplify(2) simplify(–1*(2+x+3)) => x*–1+5*–1 // would be e...
par compsystems
dim. août 17, 2025 2:09 pm
Forum : Xcas - English
Sujet : ToolBox Simplify: EXPAND cmd
Réponses : 0
Vues : 58

ToolBox Simplify: EXPAND cmd

Hello,

In the Simplify ToolBox Menu, you need to add the EXPAND command, which is used a lot.
par compsystems
dim. août 03, 2025 2:04 pm
Forum : Xcas - English
Sujet : CAS Setup
Réponses : 0
Vues : 300

CAS Setup

Hello

I notice that students get confused in the CAS configuration, I think it would be good to add the operation limits in some fields, for example, list the possible options

Auto simplify: 0 None, 1: Minimum 2: Maximum, 3: ...

and similar in other fields
par compsystems
mar. juil. 08, 2025 5:57 pm
Forum : Xcas - English
Sujet : Distribute power into quantity
Réponses : 5
Vues : 1917

Re: Distribute power into quantity

Idea
Add a new Scripts item to the menu bar, organizing them by category, so you can quickly paste a combination of important commands.

Scripts
EXPAND/
ExpandPow: exp2pow(texpand(lnexpand(pow2exp( | ))));
par compsystems
jeu. juil. 03, 2025 1:32 am
Forum : Xcas - English
Sujet : Distribute power into quantity
Réponses : 5
Vues : 1917

Re: Distribute power into quantity

Hello, this cmds script is very useful in step by step algebraic development of expressions, but difficult to remember, please add a new command or an additional parameter in an existing function
par compsystems
mar. avr. 22, 2025 2:40 pm
Forum : Xcas - English
Sujet : distributive law
Réponses : 1
Vues : 2841

distributive law

Hello

why does the distributive law not hold for complex numbers?

simplify((3+4*i)*x+(4-3*i)*y) [enter] (3+4*i)*x+(4-3*i)*y

but

simplify((3+4*j)*x+(4-3*j)*y) [enter] 4*j*x - 3*j*y + 3*x+4*y
par compsystems
jeu. avr. 03, 2025 2:01 am
Forum : Annonces
Sujet : Xcas smartphones
Réponses : 3
Vues : 17139

Re: Xcas smartphones

Some menu functions that are very useful
Currently, only SELECT is available.

Menu
Select all
Edit selection
simplify
normal
factor
approx
exact
eval
Back
Forward
par compsystems
lun. mars 24, 2025 4:19 pm
Forum : Annonces
Sujet : Xcas smartphones
Réponses : 3
Vues : 17139

Re: Xcas smartphones

I like this online version because it looks like the PC version. Suggestion, the [sel] button should perform the same [Menu] functions as the PC version. I have tested on tablets and the buttons are manageable, but on a mobile it is very difficult, I think for mobiles a version with bigger buttons i...
par compsystems
mer. déc. 11, 2024 5:01 pm
Forum : Xcas - English
Sujet : cartesian_product(set[...],set[...])
Réponses : 2
Vues : 6535

Re: cartesian_product(set[...],set[...])

Hello but some CAS (MAXIMA) include it within the list of set instructions, it is important to have an alias to '*' as an explicit name, I think it costs nothing to extend the functionality of this command, as well as including the complement of a set command, and creating a submenu of set commands ...
par compsystems
jeu. déc. 05, 2024 2:44 pm
Forum : Xcas - English
Sujet : cartesian_product(set[...],set[...])
Réponses : 2
Vues : 6535

cartesian_product(set[...],set[...])

Hello xCas has set operation commands, for a future version please add a submenu 'SET' in the PC version, however the following command is very important in set theory cartesian_product( set[1], set[a,b] ) [enter] => A X B= {(1,a),(1,b)} this is to expand the functionality of cartesian_product if th...
par compsystems
lun. déc. 02, 2024 8:21 pm
Forum : Xcas - English
Sujet : Help text in set cmd
Réponses : 0
Vues : 8596

Help text in set cmd

Hello, ox xCas PC The help field of the UNION command says that it is an infix command, but the example is shown as a prefix. likewise for minus and intersect union is an infixed operator to get the union of 2 sets. union((Vect or Set),(Vect or Set)) => union is an infixed operator to get the union ...
par compsystems
mer. nov. 27, 2024 4:50 pm
Forum : Xcas - English
Sujet : Complement of a set
Réponses : 0
Vues : 8656

Complement of a set

Hello, To obtain the complement of a set with respect to another set you can use the MINUS command, but it would be nice to create a separate command Please add this command as a function as it is a fundamental command in set theory A := set[2,3,5,7,11]; B := set[1,2,3,4,5,6,7,8,9,10,11]; C:= set[];...
par compsystems
jeu. nov. 21, 2024 3:54 am
Forum : Xcas - English
Sujet : fsolve(...'='
Réponses : 0
Vues : 8313

fsolve(...'='

hHello solve has the option to display the variable in the solution, so it would be nice to use fsolve as well. fsolve((((2*x-1) NTHROOT (3^(x^2-3)))) = (3*sqrt(3)),x,) [enter] [−0.436491673104,3.4364916731] fsolve((((2*x-1) NTHROOT (3^(x^2-3)))) = (3*sqrt(3)),x,'=') [enter] [x=−0.436491673104, x=3....
par compsystems
dim. nov. 17, 2024 2:39 am
Forum : Xcas - English
Sujet : simplify(expr, 'pol')
Réponses : 5
Vues : 10192

Re: simplify(expr, 'pol')

hello normal cmd ok I think these would be good examples to attach to the xCas documentation simplify(((1/3)*x+(23/9))*(3*x+1)+(88/9)) => (3*x^2+24*x+37) / 3 normal(((1/3)*x+(23/9))*(3*x+1)+(88/9)) => x^2 + 8*x + 37/3 as you can see the difference between the two commands. I think it would also be u...
par compsystems
sam. nov. 16, 2024 12:53 pm
Forum : Xcas - English
Sujet : simplify(expr, 'pol')
Réponses : 5
Vues : 10192

Re: simplify(expr, 'pol')

Hello. I copied the examples wrong the parameter pol, would try to take the result to an expression without quotient, that is to say it would distribute in each term automatically simplify(((1/3)*x+(23/9))*(3*x+1)+(88/9)) [Enter] returns (3*x^2+24*x+37)/3 simplify(((1/3)*x+(23/9))*(3*x+1)+(88/9), 'p...