Programming with variables

[Fluggeil]

Hello,.....maby someone can helpb. Thanx.....

I want to programm a formular with different variables. And to solve always one variable........this one what i need for my calculations.

For example: v=Ks*Js^1/2*R^2/3. I want to put the arguments v, KS, JS and R in the "export" and to get the variabel what i need. Is this possibile?

Example: Ks=70, Js=35 and v=4 now i want to get R. Next time i need Ks and put all the others inside........

If you can help me would be great.

Thanx.

[KeithB]

This is exactly what the "Solve" app does.

[Fluggeil]

Hey! o.k....it works. Thanx a lot!!

Is it possible to use varibales like the greek ones? Or just upper case form?

[BERNARD MICHAUD]

First NO program
-----------------------------
In the HOME screen type the following:
0 Sto> Ks Prime will ask you if you want to create the variable called Ks
Press OK. do the same for any variables except (A .....Z) which are already defined.

0Sto>Ks 0Sto>Js 0Sto>v (Use '0' or any value.)

Next press Apps. Navigate to the "Solve" app. 'Press Reset'. And 'Start".

Enter your function in E1:v=Ks*Js^(1/2)*R^(2/3) Press OK

Make sure E1: is checked. Press Num

v:0
Ks:0
Js:0
R:0 note R may contain a value if previously used (R is a global variable).


Enter any three variables and Solve for unknown.

In a program:
--------------------------
Enter the following.

EXPORT Ks:=0;
EXPORT Js:=0;
EXPORT v:=0;

EXPORT program name ()
BEGIN
END;

You can also do:
EXPORT Ks:=0,Js:=0,v:=0; up to 8 variables per line.

Run the program and the three variables will be created.
Go to the Slove App (as above) and enter the formula, values and solve.

Bernard

[BERNARD MICHAUD]

(06-01-2017 06:29 PM)Fluggeil Wrote:  Hey! o.k....it works. Thanx a lot!!

Is it possible to use varibales like the greek ones? Or just upper case form?

You can any Greek or other variables found in the Character menu. (Shift Chars)
You do not declare upper case letters. They are already declared by the system

EXPORT U:=0; will generate a syntax error, you can do lower case only.

[Fluggeil]

THANX a lot!! [/b]It works perfect!!!!

[Tim Wessman]

Note - the problem with the explained method is that if you *ever* remove those variables, the equation will no longer work properly.


Instead, the best solution is to define your variables in the application program that is linked to your app. This will be the top line in the program catalog when you app is active.

At the top, define your variables:

Ks,Js,v; //declare variables that only appear when this solve app is active

If you want the variables to be global through the system:

EXPORT Ks,Js,v; //declare variables that are global


This way, you are much more certain your variables will remain. keeping them local makes it much less likely they will conflict in other places.