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Math Help - Lightening Bolt

  1. #1
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    Lightening Bolt

    What does that symbol mean guys?

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    The circled symbol in the picture.

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  2. #2
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    Quote Originally Posted by JesseElFantasma View Post
    What does that symbol mean guys?

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    The circled symbol in the picture.

    There are gaps in the lines above and below, just to the left of the "symbol", that make me think something was left out in the picture. That is, that only part is shown. That, together with the captions, make me think it is simply an "R" with the vertical line missing. And that, of course, means the set of real numbers.
    Last edited by HallsofIvy; January 24th 2011 at 11:00 AM.
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  3. #3
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    Thank you HallsofIvy!
    I didn't notice that at all!

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