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Question about TI Calculators

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  1. Sep 13, 2008 #1
    How come the 89 is more expensive than the 89 Titanium on Amazon?

    http://www.amazon.com/Texas-Instrum...1?ie=UTF8&s=electronics&qid=1221360284&sr=8-1

    http://www.amazon.com/Texas-Instrum...2?ie=UTF8&s=electronics&qid=1221360378&sr=8-2

    Isnt the Titanium a lot better??

    Are there a lot of differences between the 89 models and the Ti 83? Are the differences only memory size?

    thanx to anyone who can help answer my questions..thank you!!
     
  2. jcsd
  3. Sep 14, 2008 #2
    Amazon often has sales and sometimes you can get a better product for cheaper.

    Corporations do do this, you know. For example, at McDonald's I can get a 99cent extra large soda for cheaper than I can get a medium, 1.29, I believe.

    Looks like a good time to buy a ti-89, and yes it's better than both those other two calculators. It's been a good one in my experience, however, I want to get a RPN program for it.
     
  4. Sep 14, 2008 #3
    The TI-89 has what is called a computer algebra system or CAS, which can locate symbolic solutions to problems, like finding derivatives, integrals, and whether or not infinite series converge.

    The TI-83 can only find numerical solutions to problems, like the roots of polynomials and the coefficients of systems of linear equations.

    And I have no idea why the older version of the TI-89 is more expensive.
     
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