Récupérer une solution d.une équation pour en faire une variable

Bonjour ,

est-ce que la commande liste = Racines( <Fonction>, <x min>, <x max> ) ne ferait pas l'affaire

Cordialement

Bonjour. MembreDroite (<équation>)

Exemple

a est un curseur

MembreDroite(2x+1=a) (cela crée une fonction b(x,y))

c=b(2,4) (dans c, tu as ta solution (tu peux mettre n'importe quels nombres à la place de 2 et 4...))

It depends a lot on the context.

Example: GeoGebra v.5 or 6 Classic - CAS View.

In line 1 you solve an equation using the Solutions command, then you get a single value.

In line 2 you enter a function f(x)

If you want to evaluate the function at the solution point which you got in line 1, type:

f($1)

Basically, you can use $1 as if it was a user defined value. (I've used command Solutions instead of Solve, so the list of values doesn't contain the name of the variable)

If in line 1 you get a list containing more values, you can assign a variable to each one of them, e.g.

a:=Element($1,2)

creates the variable a having as value the second solution listed in CAS line 1.

If you are using the CAS Calculator app, you can assign a label to the objects in CAS View, and use these labels as values for further calculations.

Please see https://www.geogebra.org/m/... for some interactive examples