equation equal to zero

[jmat]

hi good evening, I have been looking for the manuals but can not find such an equation equal to zero with the Nspire
example

equation => a+b=c
result to obtain => a+b-c=0

[Laurae]

substract right(E) to each part of the equation E (your a+b=c)

program to make :

yourfunctionname(eqloc)
set eq:=eqloc-right(eqloc)
Disp eq

To use it : yourfunctionname(eqloc)
example : yourfunctionname(a+b=c)
will display a+b-c=0
and also store in variable eq what is displayed

For a quick access to this, transform it to a function (not a program) and put it in MyLib, file without space or weird characters, and refresh libs, and it should appear on function libraries screen.

[jmat]

Code: Select all

Define LibPub eqcero(equloc)=
Func
Local eq
eq:=equloc-right(equloc)
Disp eq
EndFunc


Thanks, I get an error

[Laurae]

ok, forgot some functions are not available on functions instead of programs.
Edit : ok, forgot some functionnalities are not available on functions instead of programs.

Try this :

Code: Select all

Define LibPub eqcero(equloc)
Func
Return equloc-right(equloc)
EndFunc

(do the same steps for MyLib and libraries...)

to use it : eqcero(your equation)
If you want to store it for instance on variable blabla, use blabla:=eqcero(your equation)
To access the function use the libraries so you know what to type once you know what to type.

Should work fine (your function works perfectly, didn't test on the scratchpad however).

[Levak]

ok, forgot some functions are not available on functions instead of programs.

What in the code is not available for functions ?
Local, Disp and assignations are available, as long as it operates on local variables.

[Laurae]

ok, forgot some functions are not available on functions instead of programs.

What in the code is not available in Functions ?
Local, Disp and assignations are available, as long as it works on local variables.

Edited : "some functionnalities are not available on functions instead of programs"

He wants probably an output.

[Adriweb]

Hmm, why not simply using left() and right() ... ?
It works with string() to format the ouput with what you want.

It can show "the steps", then :



And you can even expr() what's in tmp2 to get an expression instread of a string, then.

[jmat]

which method would be best?