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Solving a simple equation

  1. Apr 15, 2008 #1
    Hi everybody,

    i was using the " Solve( " function in TI-89 TIT (home) and i inserted the function (* THIS IS EXACTLY WHAT I TYPED IN *) :::::

    solve(20=X(2),X)

    i mean.. it should be 10 right?
    but like it came up with the " memory error"

    * I DID RESET MEMORY AND TRIED REINSTALLING OS <--lol
    but none worked...

    PLEASE TRY ON YOUR OWN CALCULATORS AND PLEASE HELP!!!!!!!

    AGAIN PLEASE POST YOUR OWN RESULTS AFTER TRYING THE SAME EXACT EQUATION!!!
     
  2. jcsd
  3. Apr 15, 2008 #2
    the problem is with your input. Try:

    solve(20 = 2*x,x) and it should work just fine.
     
  4. Apr 15, 2008 #3
    lol it worked !
    thank you so much! lol
    so was it just my calculator or did it happen to yours too??
    i dont know know why i cant put X(2) when the brackets means multiplication as well...
     
  5. Apr 15, 2008 #4
    I received the error as well. When you enter x(2) the 89 thinks that you are treating x as a function of a variable when that variable is equal to the value 2, but you have not defined the function x. That is why you received the error. The TI-89 is a very smart calculator, so you have to be especially conscious of how you input.
     
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