TI Nspire CAS step by step

[justpassingby]

Hi,

x=[(5000/y) - 1] * 1/2]
x=[(6000/y) - 1] * 1/9]

Can anyone with a Ti Nspire CAS tell me if it can solve a system of equations like this one step by step. And if it doesn't, is there is any program to do that?

What about the Ti Nspire non-CAS, can it solve an equation like this? If yes, how?

Thanks.

[Adriweb]

With a system and solve (CAS) / nSolve or linSolve (non-CAS, I think the latter is the one needed) I believe, it will.
However, no steps.

[justpassingby]

Thanks. I am sorry but I meant a system of equation (I already corrected the post). Is the answer the same? Thanks.

[Adriweb]

Yes that's what I meant too.

Use the system template in the templates window, inside the solve command :

[Bisam]

Il faut bien sûr écrire linSolve(système, variable1, variable2,...) (contrairement à ce qu'on voit sur l'image d'Adriweb qui n'a mis qu'un "x" au lieu de "x,y")

Si tu veux la résolution "étapes par étapes", c'est également disponible.
Dans la bibliothèque "linalgcas", tu as une fonction "simultstep" qui s'utilise avec la même syntaxe et décrit les étapes à effectuer.

Cette bibliothèque est présente à l'origine sur les Nspire CAS et CX CAS.

[Adriweb]

Faut croire que avec le x tout seul ca marche aussi, cf screenshot, non ?
(Au debut j'avais essayé avec x et y, mais je me suis pris un message d'erreur a la gueule, donc...).

Et, bien vu pour simulstep, je l'avais oublié.

Mais il passe par les matrices non ?

[justpassingby]

Thank you both.

@Adriweb When I use the linsolve command, even with x instead of x and y, it gives an argument error. It says to use a system of linear equations. My TI Nspire is not CAS. Is your calculator CAS?

@Bisam I am sorry but I don't understand much about calculators. Can you tell me how do I get to linalgcas and simultstep? And does it give all the steps to solve the system?

[Bisam]

"simultstep" is also available on non CAS calculators.

Here is how to proceed :
1) check in "Mylib" folder if "linalg" folder is present
2) if it is, "refresh the libraries" by pressing
3) press to open the library shelves and find the function "simultstep"...
4) Enjoy !

[justpassingby]

Thanks. I already found it but when i use this system of equations it gives an error "Variable is not defined". It says that "no value is assigned to variable. Use one of the following commands".

[Adriweb]

What about this - make sure you enter the syntax correctly :



Also, TI's tutorial here : https://epsstore.ti.com/OA_HTML/csksxvm ... etId=93187