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Math Help - ti-89 integration help

  1. #1
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    ti-89 integration help

    hello,

    I'm having trouble with this integration problem.I am trying to integrate the equation in image two, and it comes out...weird the E is gone. I need the answer in the format of image one.I am really at a lost to why its doing that.
    Attached Thumbnails Attached Thumbnails ti-89 integration help-screen02.bmp   ti-89 integration help-screen01.jpg  
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  2. #2
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    Quote Originally Posted by infelix View Post
    hello,

    I'm having trouble with this integration problem.I am trying to integrate the equation in image two, and it comes out...weird the E is gone. I need the answer in the format of image one.I am really at a lost to why its doing that.
    Your calculator is obviously in approximate mode. Reset your calculator to exact mode.
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  3. #3
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    Mode > F2 > Approx/Exact : switch to Exact instead of Auto.

    Otherwise it's in this form because of the dot in -.1
    If you don't want to switch the mode, write \int((10-10*e^(-x/10)),x)

    and it will normally work.
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  4. #4
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    hey thanks for the quick response and that did work.I just recently bought this is so i was not really sure where to look...again thanks!
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