mailing-list for TeXmacs Users

[vincent douce <address@hidden>]

hi Marc and Joris

ho do you make then when the tikz code is dipslayed

i have tried "paste from latex" but of course it doesnt work

i mean if youdont have latex installed on your computer ?

i am not convinced by the idea of an automtic calculator/drawer for tableaux de variations, exceptof course if the result is manually editable : as theses "tableaux" are purely pedagogic, one may want to add some indications on them

the draw tool can be good, but, as for proba threes, it could be better to have something more confortable and beuatiful .

i take this occasion to say that the draw tool, more over with the shortcut i have thanks to this forum, is wonderful

Vincent

Le 11 nov. 2021 à 23:22, marc lalaude-labayle <address@hidden> a écrit :

Hi Joris, Vincent and texmacs-users.

Here is a link to create "tableaux de variations", a french didactical tool to study functions : http://math.et.info.free.fr/TikZ/TableauxVariations/index.html

It's pretty convincing when tested with my colleagues.

Best.

Marc

Le jeu. 11 nov. 2021 à 23:18, TeXmacs <address@hidden> a écrit :

Hi Vincent,

I agree that it would be nice to do something to make this easier.
For the moment, you may also use the picture editor for this.
This is a bit less constraint, and less handy for drawing
the horizontal and vertical lines of the table.
Still, it might sometimes have its advantages: if you want
special dotted or double lines, precise control over where
you wish to put certain values, etc.

Best wishes, --Joris


On Wed, Sep 01, 2021 at 09:20:40AM +0200, vincent douce wrote:
> hi
> i am wondering that something simple could be done to make tableaux de variation easy to build inside TeXmacs
> some items related with tabulation are missing for the moment :
>
> an equivalent of esc-esc-tab that would not create a blanck space but an extensible diagonale arrow (right-down ↘︎ and right-up ➚)
> an equivalent of esc-esc-tab that would  a blanck space with a + or a - at the middle
> say, if :
> * esc-esc-/ would create and extensible right-up ➚ arrow
> * esc-esc-\ would create and extensible right-down ↘︎ arrow
> * esc-esc-+ would create and extensible space with a + at the middle
> * esc-esc-– would create and extensible space with a - at the middle
> then i would create a tableau de variation by making a large bloc with 3 lines and, for example for x|->2x^3-3x^2 :
> line 1, column 2 : -∞  esc-esc-tab   0   esc-esc-tab   1   esc-esc-tab  +∞
> line 2, column 2 :   esc-esc-+   0   esc-esc-–  0   esc-esc-+
> line 3, column 2 :  _-∞ esc-esc-/   ^0   esc-esc-–   _-1   esc-esc-+  ^+∞
> that remains artisanal, but artisanal is better than impossible
>
> what do you think about that ?
>
> Vincent