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Calculators Question about a key in the ti-89

  1. Jul 19, 2007 #1
    i am having trouble finding out what the diamond + stor -> key do. i don't know what that symbol means
  2. jcsd
  3. Jul 23, 2007 #2
    anybody know what this key means?
  4. Jul 25, 2007 #3


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    Don't you have a manual for it? :confused:
    If not, maybe try out the company's website help section. Personally, I've never even seen one of those devices.
  5. Jul 25, 2007 #4


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    I've seen the @ symbol a few times when I do certain computations. @ indicates an arbitrary integer and the TI89 manual has also given @ the name arbitrary. Here is what the TI89 manual (pg. 80; Symbolic Manipulation) had to say:
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