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Calculators Write a Function in Ti 89 titanium

  1. May 30, 2009 #1
    Hello,

    I wish to write a function that takes in 3 arguments and outputs 1. I want it to be a saved function so that I can call it at will like cos() or ln()

    How do i go about doing this? I am unsure of the syntax.

    Let's say it is really simple like:

    f(x,y,z)=x+y+z

    So from the home screen I would like to type f(1,2,3) and have it return 6

    Any thoughts?

    EDIT: okay so maybe that is easier than I thought. The problem I am running into is that you cannot use the "store" key when writing a function.

    For example if I wanted to write the above like this:

    f(x,y,z)
    Func
    (x+y)->A
    Return A+z
    EndFunc

    I cannot. I have to write:

    f(x,y,z)
    Func
    Return x+y+z
    EndFunc


    Also, is there a "shift key" that will make my variables Capital if I need E instead of e ?
     
    Last edited: May 30, 2009
  2. jcsd
  3. May 30, 2009 #2

    MATLABdude

    User Avatar
    Science Advisor

  4. May 30, 2009 #3
    Yeah. That is a "user-defined" as in, you need to redefine it every time you need it.

    I edited my OP. What I posted shows how to do it from program editor-->functions

    Unfortunately, if it is a complicated expression, it is a bi##h to write as you cannot break it down into simpler components using the store button.
     
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