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Calculators Integration with TI-89

  1. Mar 1, 2009 #1
    When I use the integral feature, my TI-89 is giving a numerical answer even if I'm not selecting any bounds for integration (i.e., if I'm just taking the antiderivative). It's as if there's an implicit integral or something. How do I change this so I can just get a normal antiderivative?

    For example, if the function is x (or whatever) and I do int[x,x] it gives 0.03125 instead of 1/2 x^2
  2. jcsd
  3. Mar 3, 2009 #2


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    You probably have a value stored in 'x'. If you clear your variables (or, at least x, or use a different variable) you should get something symbolic. CAVEAT: I last used my TI-89 for something like what you're doing when TI-89s had only 1 MB of total memory.
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