Simple TI-89 program

Discussion in 'Programmer's Corner' started by guitarguy12387, Mar 18, 2009.

  1. guitarguy12387

    Thread Starter Active Member

    Apr 10, 2008
    359
    12
    Hello,

    I want to make a simple TI-89 titanium function that will simply take two resistor values as inputs and output the parallel combination of the two. I have no problem doing this as a program, but the problem is that it outputs the answer to the PrgmIO tab. The problem, however, is that I want to be able to use the function in expressions (like a cos() function for example). I assume that writing a function (as opposed to a program) would do this, but i'm not sure how to make it output to the home screen... when i try to use my function, it gives an error when trying to use the Disp function.

    Anybody have any idea how to do this?
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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  3. guitarguy12387

    Thread Starter Active Member

    Apr 10, 2008
    359
    12
    Thanks. Yeah i saw that link... i kinda want to do that... but i want it do be sort of saved... i don't want to have to define a new user defined function every time.
     
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