Le forum de XCAS

Hello The keyboard of most computers is a keyboard for writing books, not for computer programming, there was a keyboard for this purpose =) APL languaje https://external-preview.redd.it/TtA3Hch-rxMFPT6HXqbf-cO8R1Fvobk5pycR0ShQDoY.jpg?auto=webp&s=75a195199af68ba39b7492b835f60f4f2a607255 In the anima...

Hello I am using PSEINT, a pseudocode interpreter for high school students for starting with algorithmic computational logic, other teachers start their classes with professional IDEs and languages like C++, JAVA, although lately most of them want to teach and learn PYTHON. For those starting with p...

Hello, when I run this program in the online version it throws the following error message this function has been removed - you should use UTF8ToString(ptr, maxBytesToRead) instead! function area_of_circle() local Radious, Area; DispG // start the Xcas DispG Windows ClrIO // clean the DispG text out...

flatten ([a, [list[a], [a]]]) -> set [a,a,a] not yet available in 1 Xcas 1.60-1

on Xcas 1.60-1
convert( matrix[[ 1 ,2, 3 ], [ 4, 5, 6 ]], seq ) -> [1,2,3],[4,5,6] ok
Thanks

Hello Bernard

Maxima has some special set functions that are important, please see the following reference.
http://maxima.sourceforge.net/docs/manu ... ma_35.html

Any incorporation of these functions in the core of Xcas are welcome.

Thank you

parisse a écrit : ↑

lun. févr. 03, 2020 6:41 pm

There are already some commands that are compatible. I may add a few others once Casio and TI will have published their own modules.

TEXAS INSTRUMENTS CALCULATORS TEAM is already publishing its graphic library =0
https://tiplanet.org/forum/viewtopic.ph ... 25#p252825

ok ^ B_ := set[10,4, set[2,6]] D_: = set[2,6] is_included( D_, flatten(B_) ) or is_included( [D_], B_ ) returns 1 =) on flatten cmd xcas should not operate as maximum, but I don't understand why flatten xcas cmd converts main object to list Maxima: flatten gathers all members of set elements that ar...

D_ is both an element and a subset of B_, all elements of D_ are in B_, so it meets the definition of subset http://eonicasys.com/CAS/xcas/cascmd_eng_spn/images/sets_e01.png another suggestion is flatten only internal elements, preserving the main data type, otherwise the behavior of the SET object ...

in fr doc a space is shown in A:=% {1,2,3,4% } after the% symbol, that when copying (copy-paste) the expression in a Xcas session is not interpreted. google always redirects me to https://xcas.univ-grenoble-alpes.fr/, not to https://www-fourier.ujf-grenoble.fr/~parisse/giac.html. therefore the first...

Hello possible errors the expression is_included( D_, B_ ) currently returns 0 should return 1 is_included( D_, B_ ) [enter] true In the following image, you can see that many outputs are confusing when shown to the public in a presentation, it is not known if it is a position, or logical value true...

Hello hello in the french documentation shows A:=% {1,2,3,4% } but it must be A := %{1, 2,3,4 %} to be able to copy and paste in an Xcas session and it can be interpreted https://www-fourier.ujf-grenoble.fr/~parisse/giac/doc/fr/cascmd_fr/cascmd_fr499.html PD: also please in the old link show the new...

Hello Mister Bernard The following xws file contains several examples of operations on sets, http://www.eonicasys.com/CAS/xcas/cascmd_eng_spn/set/set_cmd_xcas_eng.xws this file is based on Maxima. http://maxima.sourceforge.net/docs/manual/maxima_35.html There are some small details that can be incor...

Hello

set[ ] * product( set[ a, b, c, a ] ) [enter] returns set[] expect a*b*c

the null element in multiplication is 1
NULL*3 -> 1*3

set[ ] * product( set[ a, b, c, a ] ) -> NULL* product( set[ a, b, c, a ] ) -> 1 * a*b*c

Hello F0( X ) := piecewise( X < -2,-X,-2 ≤ X < 0, X + 1, 0 ≤ X < 2, X - 1, X ≥ 2, X^2 ); plotfunc( F0(X), X ) [enter] ok F0( 2 ) [enter] 4 F7 := (X)->( (X<-2)? -X: ( ((-2≤X) AND (X<0))? X+1: ( ((0≤X) AND (X<2))? X-1 : ((X≥2)? X^2: X^2) ) ) ); [enter] ok plotfunc( F7(X), X ) [enter] ok F7( 2 ) [enter...