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How do I graph a summation using a TI 89?

  1. Mar 11, 2009 #1
    I know how to write it out in the general window, but not in the graphing window (there's no summation option in the graph feature). Is there a way to import it or another way?
     
  2. jcsd
  3. Mar 11, 2009 #2
    Change the graphing mode to sequence.
     
  4. Mar 11, 2009 #3
    How do I do that?
     
  5. Mar 11, 2009 #4
    you could try RTFM.

    (hint: there's a MODE button on the 89. You're trying to change the graph MODE. hmmmm)
     
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